Torque & Magnetic Dipole
PHXII04:MOVING CHARGES AND MAGNETISM

363054 A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at

1 \(0^\circ \) to the direction of the field.
2 \(45^{\circ}\) to the direction of the field.
3 \(90^{\circ}\) to the direction of the field.
4 \(60^{\circ}\) to the direction of the field.
PHXII04:MOVING CHARGES AND MAGNETISM

363055 Assertion :
The net force on a closed circular current carryong loop placed in uniform magnetic field is zero.
Reason :
The torque produced in a conducting circular ring is zero when it is placed in a uniform magnetic field such that magnetic field is perpendicular to the plane of loop.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

363056 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 The plane of the coil is normal to the external magnetic field
2 The plane of the coil is parallel to the external magnetic field
3 Flux through the coil is minimum
4 Torque on the coil is maximum
PHXII04:MOVING CHARGES AND MAGNETISM

363057 Four wires each of length 0.2\(m\) are bent into four different shapes \(P, Q, R\) and \(S\) as shown in figures and then suspended into a uniform magnetic field. Same current is passed in each loop then
supporting img

1 Couple on loop \(P\) will be maximum
2 Couple on loop \(R\) will be maximum
3 Couple on loop \(Q\) will be maximum
4 Couple on loop \(S\) will be maximum
PHXII04:MOVING CHARGES AND MAGNETISM

363054 A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at

1 \(0^\circ \) to the direction of the field.
2 \(45^{\circ}\) to the direction of the field.
3 \(90^{\circ}\) to the direction of the field.
4 \(60^{\circ}\) to the direction of the field.
PHXII04:MOVING CHARGES AND MAGNETISM

363055 Assertion :
The net force on a closed circular current carryong loop placed in uniform magnetic field is zero.
Reason :
The torque produced in a conducting circular ring is zero when it is placed in a uniform magnetic field such that magnetic field is perpendicular to the plane of loop.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

363056 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 The plane of the coil is normal to the external magnetic field
2 The plane of the coil is parallel to the external magnetic field
3 Flux through the coil is minimum
4 Torque on the coil is maximum
PHXII04:MOVING CHARGES AND MAGNETISM

363057 Four wires each of length 0.2\(m\) are bent into four different shapes \(P, Q, R\) and \(S\) as shown in figures and then suspended into a uniform magnetic field. Same current is passed in each loop then
supporting img

1 Couple on loop \(P\) will be maximum
2 Couple on loop \(R\) will be maximum
3 Couple on loop \(Q\) will be maximum
4 Couple on loop \(S\) will be maximum
PHXII04:MOVING CHARGES AND MAGNETISM

363054 A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at

1 \(0^\circ \) to the direction of the field.
2 \(45^{\circ}\) to the direction of the field.
3 \(90^{\circ}\) to the direction of the field.
4 \(60^{\circ}\) to the direction of the field.
PHXII04:MOVING CHARGES AND MAGNETISM

363055 Assertion :
The net force on a closed circular current carryong loop placed in uniform magnetic field is zero.
Reason :
The torque produced in a conducting circular ring is zero when it is placed in a uniform magnetic field such that magnetic field is perpendicular to the plane of loop.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

363056 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 The plane of the coil is normal to the external magnetic field
2 The plane of the coil is parallel to the external magnetic field
3 Flux through the coil is minimum
4 Torque on the coil is maximum
PHXII04:MOVING CHARGES AND MAGNETISM

363057 Four wires each of length 0.2\(m\) are bent into four different shapes \(P, Q, R\) and \(S\) as shown in figures and then suspended into a uniform magnetic field. Same current is passed in each loop then
supporting img

1 Couple on loop \(P\) will be maximum
2 Couple on loop \(R\) will be maximum
3 Couple on loop \(Q\) will be maximum
4 Couple on loop \(S\) will be maximum
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PHXII04:MOVING CHARGES AND MAGNETISM

363054 A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at

1 \(0^\circ \) to the direction of the field.
2 \(45^{\circ}\) to the direction of the field.
3 \(90^{\circ}\) to the direction of the field.
4 \(60^{\circ}\) to the direction of the field.
PHXII04:MOVING CHARGES AND MAGNETISM

363055 Assertion :
The net force on a closed circular current carryong loop placed in uniform magnetic field is zero.
Reason :
The torque produced in a conducting circular ring is zero when it is placed in a uniform magnetic field such that magnetic field is perpendicular to the plane of loop.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

363056 A current carrying circular coil, suspended freely in a uniform external magnetic field orients to a position of stable equilibrium. In this state:

1 The plane of the coil is normal to the external magnetic field
2 The plane of the coil is parallel to the external magnetic field
3 Flux through the coil is minimum
4 Torque on the coil is maximum
PHXII04:MOVING CHARGES AND MAGNETISM

363057 Four wires each of length 0.2\(m\) are bent into four different shapes \(P, Q, R\) and \(S\) as shown in figures and then suspended into a uniform magnetic field. Same current is passed in each loop then
supporting img

1 Couple on loop \(P\) will be maximum
2 Couple on loop \(R\) will be maximum
3 Couple on loop \(Q\) will be maximum
4 Couple on loop \(S\) will be maximum