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1 | 4690-4693 | So that B = m H and c is called the
magnetic susceptibility of the material The three quantities, c, the
relative magnetic permeability mr, and the magnetic permeability m are
related as follows:
m = m0 mr
mr = 1+ c
7 Magnetic materials are broadly classified as: diamagnetic, paramagnetic,
and ferromagnetic For diamagnetic materials c is negative and small
and for paramagnetic materials it is positive and small |
1 | 4691-4694 | The three quantities, c, the
relative magnetic permeability mr, and the magnetic permeability m are
related as follows:
m = m0 mr
mr = 1+ c
7 Magnetic materials are broadly classified as: diamagnetic, paramagnetic,
and ferromagnetic For diamagnetic materials c is negative and small
and for paramagnetic materials it is positive and small Ferromagnetic
materials have large c and are characterised by non-linear relation
between B and H |
1 | 4692-4695 | Magnetic materials are broadly classified as: diamagnetic, paramagnetic,
and ferromagnetic For diamagnetic materials c is negative and small
and for paramagnetic materials it is positive and small Ferromagnetic
materials have large c and are characterised by non-linear relation
between B and H 8 |
1 | 4693-4696 | For diamagnetic materials c is negative and small
and for paramagnetic materials it is positive and small Ferromagnetic
materials have large c and are characterised by non-linear relation
between B and H 8 Substances, which at room temperature, retain their ferromagnetic
property for a long period of time are called permanent magnets |
1 | 4694-4697 | Ferromagnetic
materials have large c and are characterised by non-linear relation
between B and H 8 Substances, which at room temperature, retain their ferromagnetic
property for a long period of time are called permanent magnets Physical quantity
Symbol
Nature
Dimensions
Units
Remarks
Permeability of
m0
Scalar
[MLT–2 A–2]
T m A–1
m0/4p = 10–7
free space
Magnetic field,
B
Vector
[MT–2 A–1]
T (tesla)
104 G (gauss) = 1 T
Magnetic induction,
Magnetic flux density
Magnetic moment
m
Vector
[L–2 A]
A m2
Rationalised 2023-24
151
Magnetism and
Matter
POINTS TO PONDER
1 |
1 | 4695-4698 | 8 Substances, which at room temperature, retain their ferromagnetic
property for a long period of time are called permanent magnets Physical quantity
Symbol
Nature
Dimensions
Units
Remarks
Permeability of
m0
Scalar
[MLT–2 A–2]
T m A–1
m0/4p = 10–7
free space
Magnetic field,
B
Vector
[MT–2 A–1]
T (tesla)
104 G (gauss) = 1 T
Magnetic induction,
Magnetic flux density
Magnetic moment
m
Vector
[L–2 A]
A m2
Rationalised 2023-24
151
Magnetism and
Matter
POINTS TO PONDER
1 A satisfactory understanding of magnetic phenomenon in terms of moving
charges/currents was arrived at after 1800 AD |
1 | 4696-4699 | Substances, which at room temperature, retain their ferromagnetic
property for a long period of time are called permanent magnets Physical quantity
Symbol
Nature
Dimensions
Units
Remarks
Permeability of
m0
Scalar
[MLT–2 A–2]
T m A–1
m0/4p = 10–7
free space
Magnetic field,
B
Vector
[MT–2 A–1]
T (tesla)
104 G (gauss) = 1 T
Magnetic induction,
Magnetic flux density
Magnetic moment
m
Vector
[L–2 A]
A m2
Rationalised 2023-24
151
Magnetism and
Matter
POINTS TO PONDER
1 A satisfactory understanding of magnetic phenomenon in terms of moving
charges/currents was arrived at after 1800 AD But technological
exploitation of the directional properties of magnets predates this scientific
understanding by two thousand years |
1 | 4697-4700 | Physical quantity
Symbol
Nature
Dimensions
Units
Remarks
Permeability of
m0
Scalar
[MLT–2 A–2]
T m A–1
m0/4p = 10–7
free space
Magnetic field,
B
Vector
[MT–2 A–1]
T (tesla)
104 G (gauss) = 1 T
Magnetic induction,
Magnetic flux density
Magnetic moment
m
Vector
[L–2 A]
A m2
Rationalised 2023-24
151
Magnetism and
Matter
POINTS TO PONDER
1 A satisfactory understanding of magnetic phenomenon in terms of moving
charges/currents was arrived at after 1800 AD But technological
exploitation of the directional properties of magnets predates this scientific
understanding by two thousand years Thus, scientific understanding is
not a necessary condition for engineering applications |
1 | 4698-4701 | A satisfactory understanding of magnetic phenomenon in terms of moving
charges/currents was arrived at after 1800 AD But technological
exploitation of the directional properties of magnets predates this scientific
understanding by two thousand years Thus, scientific understanding is
not a necessary condition for engineering applications Ideally, science
and engineering go hand-in-hand, one leading and assisting the other in
tandem |
1 | 4699-4702 | But technological
exploitation of the directional properties of magnets predates this scientific
understanding by two thousand years Thus, scientific understanding is
not a necessary condition for engineering applications Ideally, science
and engineering go hand-in-hand, one leading and assisting the other in
tandem 2 |
1 | 4700-4703 | Thus, scientific understanding is
not a necessary condition for engineering applications Ideally, science
and engineering go hand-in-hand, one leading and assisting the other in
tandem 2 Magnetic monopoles do not exist |
1 | 4701-4704 | Ideally, science
and engineering go hand-in-hand, one leading and assisting the other in
tandem 2 Magnetic monopoles do not exist If you slice a magnet in half, you get
two smaller magnets |
1 | 4702-4705 | 2 Magnetic monopoles do not exist If you slice a magnet in half, you get
two smaller magnets On the other hand, isolated positive and negative
charges exist |
1 | 4703-4706 | Magnetic monopoles do not exist If you slice a magnet in half, you get
two smaller magnets On the other hand, isolated positive and negative
charges exist There exists a smallest unit of charge, for example, the
electronic charge with value |e| = 1 |
1 | 4704-4707 | If you slice a magnet in half, you get
two smaller magnets On the other hand, isolated positive and negative
charges exist There exists a smallest unit of charge, for example, the
electronic charge with value |e| = 1 6 ×10–19 C |
1 | 4705-4708 | On the other hand, isolated positive and negative
charges exist There exists a smallest unit of charge, for example, the
electronic charge with value |e| = 1 6 ×10–19 C All other charges are
integral multiples of this smallest unit charge |
1 | 4706-4709 | There exists a smallest unit of charge, for example, the
electronic charge with value |e| = 1 6 ×10–19 C All other charges are
integral multiples of this smallest unit charge In other words, charge is
quantised |
1 | 4707-4710 | 6 ×10–19 C All other charges are
integral multiples of this smallest unit charge In other words, charge is
quantised We do not know why magnetic monopoles do not exist or why
electric charge is quantised |
1 | 4708-4711 | All other charges are
integral multiples of this smallest unit charge In other words, charge is
quantised We do not know why magnetic monopoles do not exist or why
electric charge is quantised 3 |
1 | 4709-4712 | In other words, charge is
quantised We do not know why magnetic monopoles do not exist or why
electric charge is quantised 3 A consequence of the fact that magnetic monopoles do not exist is that
the magnetic field lines are continuous and form closed loops |
1 | 4710-4713 | We do not know why magnetic monopoles do not exist or why
electric charge is quantised 3 A consequence of the fact that magnetic monopoles do not exist is that
the magnetic field lines are continuous and form closed loops In contrast,
the electrostatic lines of force begin on a positive charge and terminate
on the negative charge (or fade out at infinity) |
1 | 4711-4714 | 3 A consequence of the fact that magnetic monopoles do not exist is that
the magnetic field lines are continuous and form closed loops In contrast,
the electrostatic lines of force begin on a positive charge and terminate
on the negative charge (or fade out at infinity) 4 |
1 | 4712-4715 | A consequence of the fact that magnetic monopoles do not exist is that
the magnetic field lines are continuous and form closed loops In contrast,
the electrostatic lines of force begin on a positive charge and terminate
on the negative charge (or fade out at infinity) 4 A miniscule difference in the value of c, the magnetic susceptibility, yields
radically different behaviour: diamagnetic versus paramagnetic |
1 | 4713-4716 | In contrast,
the electrostatic lines of force begin on a positive charge and terminate
on the negative charge (or fade out at infinity) 4 A miniscule difference in the value of c, the magnetic susceptibility, yields
radically different behaviour: diamagnetic versus paramagnetic For
diamagnetic materials c = –10–5 whereas c = +10–5 for paramagnetic
materials |
1 | 4714-4717 | 4 A miniscule difference in the value of c, the magnetic susceptibility, yields
radically different behaviour: diamagnetic versus paramagnetic For
diamagnetic materials c = –10–5 whereas c = +10–5 for paramagnetic
materials 5 |
1 | 4715-4718 | A miniscule difference in the value of c, the magnetic susceptibility, yields
radically different behaviour: diamagnetic versus paramagnetic For
diamagnetic materials c = –10–5 whereas c = +10–5 for paramagnetic
materials 5 There exists a perfect diamagnet, namely, a superconductor |
1 | 4716-4719 | For
diamagnetic materials c = –10–5 whereas c = +10–5 for paramagnetic
materials 5 There exists a perfect diamagnet, namely, a superconductor This is a
metal at very low temperatures |
1 | 4717-4720 | 5 There exists a perfect diamagnet, namely, a superconductor This is a
metal at very low temperatures In this case c = –1, mr = 0, m = 0 |
1 | 4718-4721 | There exists a perfect diamagnet, namely, a superconductor This is a
metal at very low temperatures In this case c = –1, mr = 0, m = 0 The
external magnetic field is totally expelled |
1 | 4719-4722 | This is a
metal at very low temperatures In this case c = –1, mr = 0, m = 0 The
external magnetic field is totally expelled Interestingly, this material is
also a perfect conductor |
1 | 4720-4723 | In this case c = –1, mr = 0, m = 0 The
external magnetic field is totally expelled Interestingly, this material is
also a perfect conductor However, there exists no classical theory which
ties these two properties together |
1 | 4721-4724 | The
external magnetic field is totally expelled Interestingly, this material is
also a perfect conductor However, there exists no classical theory which
ties these two properties together A quantum-mechanical theory by
Bardeen, Cooper, and Schrieffer (BCS theory) explains these effects |
1 | 4722-4725 | Interestingly, this material is
also a perfect conductor However, there exists no classical theory which
ties these two properties together A quantum-mechanical theory by
Bardeen, Cooper, and Schrieffer (BCS theory) explains these effects The
BCS theory was proposed in1957 and was eventually recognised by a Nobel
Prize in physics in 1970 |
1 | 4723-4726 | However, there exists no classical theory which
ties these two properties together A quantum-mechanical theory by
Bardeen, Cooper, and Schrieffer (BCS theory) explains these effects The
BCS theory was proposed in1957 and was eventually recognised by a Nobel
Prize in physics in 1970 Magnetic flux
fB
Scalar
[ML2T–2 A–1]
W (weber)
W = T m2
Magnetisation
M
Vector
[L–1 A]
A m–1
Magnetic moment
Volume
Magnetic intensity
H
Vector
[L–1 A]
A m–1
B = m0 (H + M)
Magnetic field
strength
Magnetic
c
Scalar
-
-
M = cH
susceptibility
Relative magnetic
mr
Scalar
-
-
B = m0 mr H
permeability
Magnetic permeability
m
Scalar
[MLT–2 A–2]
T m A–1
m = m0 mr
N A–2
B = m H
Rationalised 2023-24
Physics
152
6 |
1 | 4724-4727 | A quantum-mechanical theory by
Bardeen, Cooper, and Schrieffer (BCS theory) explains these effects The
BCS theory was proposed in1957 and was eventually recognised by a Nobel
Prize in physics in 1970 Magnetic flux
fB
Scalar
[ML2T–2 A–1]
W (weber)
W = T m2
Magnetisation
M
Vector
[L–1 A]
A m–1
Magnetic moment
Volume
Magnetic intensity
H
Vector
[L–1 A]
A m–1
B = m0 (H + M)
Magnetic field
strength
Magnetic
c
Scalar
-
-
M = cH
susceptibility
Relative magnetic
mr
Scalar
-
-
B = m0 mr H
permeability
Magnetic permeability
m
Scalar
[MLT–2 A–2]
T m A–1
m = m0 mr
N A–2
B = m H
Rationalised 2023-24
Physics
152
6 Diamagnetism is universal |
1 | 4725-4728 | The
BCS theory was proposed in1957 and was eventually recognised by a Nobel
Prize in physics in 1970 Magnetic flux
fB
Scalar
[ML2T–2 A–1]
W (weber)
W = T m2
Magnetisation
M
Vector
[L–1 A]
A m–1
Magnetic moment
Volume
Magnetic intensity
H
Vector
[L–1 A]
A m–1
B = m0 (H + M)
Magnetic field
strength
Magnetic
c
Scalar
-
-
M = cH
susceptibility
Relative magnetic
mr
Scalar
-
-
B = m0 mr H
permeability
Magnetic permeability
m
Scalar
[MLT–2 A–2]
T m A–1
m = m0 mr
N A–2
B = m H
Rationalised 2023-24
Physics
152
6 Diamagnetism is universal It is present in all materials |
1 | 4726-4729 | Magnetic flux
fB
Scalar
[ML2T–2 A–1]
W (weber)
W = T m2
Magnetisation
M
Vector
[L–1 A]
A m–1
Magnetic moment
Volume
Magnetic intensity
H
Vector
[L–1 A]
A m–1
B = m0 (H + M)
Magnetic field
strength
Magnetic
c
Scalar
-
-
M = cH
susceptibility
Relative magnetic
mr
Scalar
-
-
B = m0 mr H
permeability
Magnetic permeability
m
Scalar
[MLT–2 A–2]
T m A–1
m = m0 mr
N A–2
B = m H
Rationalised 2023-24
Physics
152
6 Diamagnetism is universal It is present in all materials But it
is weak and hard to detect if the substance is para- or ferromagnetic |
1 | 4727-4730 | Diamagnetism is universal It is present in all materials But it
is weak and hard to detect if the substance is para- or ferromagnetic 7 |
1 | 4728-4731 | It is present in all materials But it
is weak and hard to detect if the substance is para- or ferromagnetic 7 We have classified materials as diamagnetic, paramagnetic, and
ferromagnetic |
1 | 4729-4732 | But it
is weak and hard to detect if the substance is para- or ferromagnetic 7 We have classified materials as diamagnetic, paramagnetic, and
ferromagnetic However, there exist additional types of magnetic material
such as ferrimagnetic, anti-ferromagnetic, spin glass, etc |
1 | 4730-4733 | 7 We have classified materials as diamagnetic, paramagnetic, and
ferromagnetic However, there exist additional types of magnetic material
such as ferrimagnetic, anti-ferromagnetic, spin glass, etc with properties
which are exotic and mysterious |
1 | 4731-4734 | We have classified materials as diamagnetic, paramagnetic, and
ferromagnetic However, there exist additional types of magnetic material
such as ferrimagnetic, anti-ferromagnetic, spin glass, etc with properties
which are exotic and mysterious EXERCISES
5 |
1 | 4732-4735 | However, there exist additional types of magnetic material
such as ferrimagnetic, anti-ferromagnetic, spin glass, etc with properties
which are exotic and mysterious EXERCISES
5 1
A short bar magnet placed with its axis at 30° with a uniform external
magnetic field of 0 |
1 | 4733-4736 | with properties
which are exotic and mysterious EXERCISES
5 1
A short bar magnet placed with its axis at 30° with a uniform external
magnetic field of 0 25 T experiences a torque of magnitude equal to
4 |
1 | 4734-4737 | EXERCISES
5 1
A short bar magnet placed with its axis at 30° with a uniform external
magnetic field of 0 25 T experiences a torque of magnitude equal to
4 5 × 10–2 J |
1 | 4735-4738 | 1
A short bar magnet placed with its axis at 30° with a uniform external
magnetic field of 0 25 T experiences a torque of magnitude equal to
4 5 × 10–2 J What is the magnitude of magnetic moment of the magnet |
1 | 4736-4739 | 25 T experiences a torque of magnitude equal to
4 5 × 10–2 J What is the magnitude of magnetic moment of the magnet 5 |
1 | 4737-4740 | 5 × 10–2 J What is the magnitude of magnetic moment of the magnet 5 2
A short bar magnet of magnetic moment m = 0 |
1 | 4738-4741 | What is the magnitude of magnetic moment of the magnet 5 2
A short bar magnet of magnetic moment m = 0 32 JT –1 is placed in a
uniform magnetic field of 0 |
1 | 4739-4742 | 5 2
A short bar magnet of magnetic moment m = 0 32 JT –1 is placed in a
uniform magnetic field of 0 15 T |
1 | 4740-4743 | 2
A short bar magnet of magnetic moment m = 0 32 JT –1 is placed in a
uniform magnetic field of 0 15 T If the bar is free to rotate in the
plane of the field, which orientation would correspond to its (a) stable,
and (b) unstable equilibrium |
1 | 4741-4744 | 32 JT –1 is placed in a
uniform magnetic field of 0 15 T If the bar is free to rotate in the
plane of the field, which orientation would correspond to its (a) stable,
and (b) unstable equilibrium What is the potential energy of the
magnet in each case |
1 | 4742-4745 | 15 T If the bar is free to rotate in the
plane of the field, which orientation would correspond to its (a) stable,
and (b) unstable equilibrium What is the potential energy of the
magnet in each case 5 |
1 | 4743-4746 | If the bar is free to rotate in the
plane of the field, which orientation would correspond to its (a) stable,
and (b) unstable equilibrium What is the potential energy of the
magnet in each case 5 3
A closely wound solenoid of 800 turns and area of cross section
2 |
1 | 4744-4747 | What is the potential energy of the
magnet in each case 5 3
A closely wound solenoid of 800 turns and area of cross section
2 5 × 10–4 m2 carries a current of 3 |
1 | 4745-4748 | 5 3
A closely wound solenoid of 800 turns and area of cross section
2 5 × 10–4 m2 carries a current of 3 0 A |
1 | 4746-4749 | 3
A closely wound solenoid of 800 turns and area of cross section
2 5 × 10–4 m2 carries a current of 3 0 A Explain the sense in which
the solenoid acts like a bar magnet |
1 | 4747-4750 | 5 × 10–4 m2 carries a current of 3 0 A Explain the sense in which
the solenoid acts like a bar magnet What is its associated magnetic
moment |
1 | 4748-4751 | 0 A Explain the sense in which
the solenoid acts like a bar magnet What is its associated magnetic
moment 5 |
1 | 4749-4752 | Explain the sense in which
the solenoid acts like a bar magnet What is its associated magnetic
moment 5 4
If the solenoid in Exercise 5 |
1 | 4750-4753 | What is its associated magnetic
moment 5 4
If the solenoid in Exercise 5 5 is free to turn about the vertical
direction and a uniform horizontal magnetic field of 0 |
1 | 4751-4754 | 5 4
If the solenoid in Exercise 5 5 is free to turn about the vertical
direction and a uniform horizontal magnetic field of 0 25 T is applied,
what is the magnitude of torque on the solenoid when its axis makes
an angle of 30° with the direction of applied field |
1 | 4752-4755 | 4
If the solenoid in Exercise 5 5 is free to turn about the vertical
direction and a uniform horizontal magnetic field of 0 25 T is applied,
what is the magnitude of torque on the solenoid when its axis makes
an angle of 30° with the direction of applied field 5 |
1 | 4753-4756 | 5 is free to turn about the vertical
direction and a uniform horizontal magnetic field of 0 25 T is applied,
what is the magnitude of torque on the solenoid when its axis makes
an angle of 30° with the direction of applied field 5 5
A bar magnet of magnetic moment 1 |
1 | 4754-4757 | 25 T is applied,
what is the magnitude of torque on the solenoid when its axis makes
an angle of 30° with the direction of applied field 5 5
A bar magnet of magnetic moment 1 5 J T –1 lies aligned with the
direction of a uniform magnetic field of 0 |
1 | 4755-4758 | 5 5
A bar magnet of magnetic moment 1 5 J T –1 lies aligned with the
direction of a uniform magnetic field of 0 22 T |
1 | 4756-4759 | 5
A bar magnet of magnetic moment 1 5 J T –1 lies aligned with the
direction of a uniform magnetic field of 0 22 T (a) What is the amount of work required by an external torque to
turn the magnet so as to align its magnetic moment: (i) normal
to the field direction, (ii) opposite to the field direction |
1 | 4757-4760 | 5 J T –1 lies aligned with the
direction of a uniform magnetic field of 0 22 T (a) What is the amount of work required by an external torque to
turn the magnet so as to align its magnetic moment: (i) normal
to the field direction, (ii) opposite to the field direction (b) What is the torque on the magnet in cases (i) and (ii) |
1 | 4758-4761 | 22 T (a) What is the amount of work required by an external torque to
turn the magnet so as to align its magnetic moment: (i) normal
to the field direction, (ii) opposite to the field direction (b) What is the torque on the magnet in cases (i) and (ii) 5 |
1 | 4759-4762 | (a) What is the amount of work required by an external torque to
turn the magnet so as to align its magnetic moment: (i) normal
to the field direction, (ii) opposite to the field direction (b) What is the torque on the magnet in cases (i) and (ii) 5 6
A closely wound solenoid of 2000 turns and area of cross-section
1 |
1 | 4760-4763 | (b) What is the torque on the magnet in cases (i) and (ii) 5 6
A closely wound solenoid of 2000 turns and area of cross-section
1 6 × 10 –4 m2, carrying a current of 4 |
1 | 4761-4764 | 5 6
A closely wound solenoid of 2000 turns and area of cross-section
1 6 × 10 –4 m2, carrying a current of 4 0 A, is suspended through its
centre allowing it to turn in a horizontal plane |
1 | 4762-4765 | 6
A closely wound solenoid of 2000 turns and area of cross-section
1 6 × 10 –4 m2, carrying a current of 4 0 A, is suspended through its
centre allowing it to turn in a horizontal plane (a) What is the magnetic moment associated with the solenoid |
1 | 4763-4766 | 6 × 10 –4 m2, carrying a current of 4 0 A, is suspended through its
centre allowing it to turn in a horizontal plane (a) What is the magnetic moment associated with the solenoid (b) What is the force and torque on the solenoid if a uniform
horizontal magnetic field of 7 |
1 | 4764-4767 | 0 A, is suspended through its
centre allowing it to turn in a horizontal plane (a) What is the magnetic moment associated with the solenoid (b) What is the force and torque on the solenoid if a uniform
horizontal magnetic field of 7 5 × 10–2 T is set up at an angle of
30° with the axis of the solenoid |
1 | 4765-4768 | (a) What is the magnetic moment associated with the solenoid (b) What is the force and torque on the solenoid if a uniform
horizontal magnetic field of 7 5 × 10–2 T is set up at an angle of
30° with the axis of the solenoid 5 |
1 | 4766-4769 | (b) What is the force and torque on the solenoid if a uniform
horizontal magnetic field of 7 5 × 10–2 T is set up at an angle of
30° with the axis of the solenoid 5 7
A short bar magnet has a magnetic moment of 0 |
1 | 4767-4770 | 5 × 10–2 T is set up at an angle of
30° with the axis of the solenoid 5 7
A short bar magnet has a magnetic moment of 0 48 J T –1 |
1 | 4768-4771 | 5 7
A short bar magnet has a magnetic moment of 0 48 J T –1 Give the
direction and magnitude of the magnetic field produced by the magnet
at a distance of 10 cm from the centre of the magnet on (a) the axis,
(b) the equatorial lines (normal bisector) of the magnet |
1 | 4769-4772 | 7
A short bar magnet has a magnetic moment of 0 48 J T –1 Give the
direction and magnitude of the magnetic field produced by the magnet
at a distance of 10 cm from the centre of the magnet on (a) the axis,
(b) the equatorial lines (normal bisector) of the magnet Rationalised 2023-24
153
Magnetism and
Matter
5 |
1 | 4770-4773 | 48 J T –1 Give the
direction and magnitude of the magnetic field produced by the magnet
at a distance of 10 cm from the centre of the magnet on (a) the axis,
(b) the equatorial lines (normal bisector) of the magnet Rationalised 2023-24
153
Magnetism and
Matter
5 8
A short bar magnet placed in a horizontal plane has its axis aligned
along the magnetic north-south direction |
1 | 4771-4774 | Give the
direction and magnitude of the magnetic field produced by the magnet
at a distance of 10 cm from the centre of the magnet on (a) the axis,
(b) the equatorial lines (normal bisector) of the magnet Rationalised 2023-24
153
Magnetism and
Matter
5 8
A short bar magnet placed in a horizontal plane has its axis aligned
along the magnetic north-south direction Null points are found on
the axis of the magnet at 14 cm from the centre of the magnet |
1 | 4772-4775 | Rationalised 2023-24
153
Magnetism and
Matter
5 8
A short bar magnet placed in a horizontal plane has its axis aligned
along the magnetic north-south direction Null points are found on
the axis of the magnet at 14 cm from the centre of the magnet The
earth’s magnetic field at the place is 0 |
1 | 4773-4776 | 8
A short bar magnet placed in a horizontal plane has its axis aligned
along the magnetic north-south direction Null points are found on
the axis of the magnet at 14 cm from the centre of the magnet The
earth’s magnetic field at the place is 0 36 G and the angle of dip is
zero |
1 | 4774-4777 | Null points are found on
the axis of the magnet at 14 cm from the centre of the magnet The
earth’s magnetic field at the place is 0 36 G and the angle of dip is
zero What is the total magnetic field on the normal bisector of the
magnet at the same distance as the null–point (i |
1 | 4775-4778 | The
earth’s magnetic field at the place is 0 36 G and the angle of dip is
zero What is the total magnetic field on the normal bisector of the
magnet at the same distance as the null–point (i e |
1 | 4776-4779 | 36 G and the angle of dip is
zero What is the total magnetic field on the normal bisector of the
magnet at the same distance as the null–point (i e , 14 cm) from the
centre of the magnet |
1 | 4777-4780 | What is the total magnetic field on the normal bisector of the
magnet at the same distance as the null–point (i e , 14 cm) from the
centre of the magnet (At null points, field due to a magnet is equal
and opposite to the horizontal component of earth’s magnetic field |
1 | 4778-4781 | e , 14 cm) from the
centre of the magnet (At null points, field due to a magnet is equal
and opposite to the horizontal component of earth’s magnetic field )
5 |
1 | 4779-4782 | , 14 cm) from the
centre of the magnet (At null points, field due to a magnet is equal
and opposite to the horizontal component of earth’s magnetic field )
5 9
If the bar magnet in exercise 5 |
1 | 4780-4783 | (At null points, field due to a magnet is equal
and opposite to the horizontal component of earth’s magnetic field )
5 9
If the bar magnet in exercise 5 13 is turned around by 180°, where
will the new null points be located |
1 | 4781-4784 | )
5 9
If the bar magnet in exercise 5 13 is turned around by 180°, where
will the new null points be located Rationalised 2023-24
Physics
154
6 |
1 | 4782-4785 | 9
If the bar magnet in exercise 5 13 is turned around by 180°, where
will the new null points be located Rationalised 2023-24
Physics
154
6 1 INTRODUCTION
Electricity and magnetism were considered separate and unrelated
phenomena for a long time |
1 | 4783-4786 | 13 is turned around by 180°, where
will the new null points be located Rationalised 2023-24
Physics
154
6 1 INTRODUCTION
Electricity and magnetism were considered separate and unrelated
phenomena for a long time In the early decades of the nineteenth century,
experiments on electric current by Oersted, Ampere and a few others
established the fact that electricity and magnetism are inter-related |
1 | 4784-4787 | Rationalised 2023-24
Physics
154
6 1 INTRODUCTION
Electricity and magnetism were considered separate and unrelated
phenomena for a long time In the early decades of the nineteenth century,
experiments on electric current by Oersted, Ampere and a few others
established the fact that electricity and magnetism are inter-related They
found that moving electric charges produce magnetic fields |
1 | 4785-4788 | 1 INTRODUCTION
Electricity and magnetism were considered separate and unrelated
phenomena for a long time In the early decades of the nineteenth century,
experiments on electric current by Oersted, Ampere and a few others
established the fact that electricity and magnetism are inter-related They
found that moving electric charges produce magnetic fields For example,
an electric current deflects a magnetic compass needle placed in its vicinity |
1 | 4786-4789 | In the early decades of the nineteenth century,
experiments on electric current by Oersted, Ampere and a few others
established the fact that electricity and magnetism are inter-related They
found that moving electric charges produce magnetic fields For example,
an electric current deflects a magnetic compass needle placed in its vicinity This naturally raises the questions like: Is the converse effect possible |
1 | 4787-4790 | They
found that moving electric charges produce magnetic fields For example,
an electric current deflects a magnetic compass needle placed in its vicinity This naturally raises the questions like: Is the converse effect possible Can moving magnets produce electric currents |
1 | 4788-4791 | For example,
an electric current deflects a magnetic compass needle placed in its vicinity This naturally raises the questions like: Is the converse effect possible Can moving magnets produce electric currents Does the nature permit
such a relation between electricity and magnetism |
1 | 4789-4792 | This naturally raises the questions like: Is the converse effect possible Can moving magnets produce electric currents Does the nature permit
such a relation between electricity and magnetism The answer is
resounding yes |
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