Torque on a Magnetic Dipole in a Uniform Magnetic Field NEET Questions

Physics - Magnetic Effects of Current and Magnetism

Torque on a Magnetic Dipole in a Uniform Magnetic Field MCQ Questions


13.
The direction of the torque on a magnetic dipole in a uniform magnetic field is given by:
A.
Right-hand rule
B.
Left-hand rule
C.
Torque vector direction
D.
Thumb rule
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ANSWER :
C. Torque vector direction
14.
If the torque acting on a magnetic dipole is zero, then the dipole must be:
A.
Perpendicular to the field
B.
Parallel to the field
C.
Aligned with the field
D.
At an arbitrary angle
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ANSWER :
B. Parallel to the field
15.
The torque on a magnetic dipole in a uniform magnetic field is independent of:
A.
Magnetic field strength
B.
Angle between M and B
C.
The loop area
D.
The dipole length
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ANSWER :
D. The dipole length
16.
A magnetic dipole is in stable equilibrium when:
A.
Aligned with the field
B.
Perpendicular to the field
C.
Opposite to the field
D.
At an arbitrary angle
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ANSWER :
A. Aligned with the field
17.
For an ideal magnetic dipole, the torque in a uniform magnetic field is:
A.
Always zero
B.
Always constant
C.
Depends on position
D.
Depends on the material
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ANSWER :
A. Always zero
18.
If the magnetic dipole moment of a loop is doubled, then the torque acting on it for the same field and angle is:
A.
Halved
B.
Doubled
C.
Same
D.
Quadrupled
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ANSWER :
B. Doubled