Current Loop as a Magnetic Dipole and its Magnetic Dipole Moment NEET Questions

Physics - Magnetic Effects of Current and Magnetism

Current Loop as a Magnetic Dipole and its Magnetic Dipole Moment MCQ Questions


1.
The magnetic dipole moment of a current-carrying loop depends on which of the following factors?
A.
Current and radius
B.
Only current
C.
Only radius
D.
Neither current nor radius
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ANSWER :
A. Current and radius
2.
A current loop behaves like a magnetic dipole because:
A.
It produces a uniform electric field
B.
It produces a magnetic field
C.
It produces an electric dipole moment
D.
It follows Newton’s third law
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ANSWER :
B. It produces a magnetic field
3.
The magnetic dipole moment (M) of a current loop of area A and current I is given by:
A.
M = I × A
B.
M = B × I
C.
M = I × r²
D.
M = B × A
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ANSWER :
A. M = I × A
4.
The ratio of the magnetic dipole moment to the angular momentum of a current-carrying electron is called

NEET - 2020

A.
Charge-to-mass ratio
B.
Gyromagnetic ratio
C.
Magnetic susceptibility
D.
Permeability
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ANSWER :
B. Gyromagnetic ratio
5.
If the radius of a circular current loop is doubled, its magnetic dipole moment:
A.
Doubles
B.
Quadruples
C.
Remains the same
D.
Halves
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ANSWER :
B. Quadruples
6.
What is the SI unit of magnetic dipole moment?
A.
A/m²
B.
J/T
C.
A.m²
D.
N.m
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ANSWER :
C. A.m²