Magnetics Ques 82

  1. A conducting circular loop of radius $r$ carries a constant current $i$. It is placed in a uniform magnetic field $\mathbf{B} _0$ such that $\mathbf{B} _0$ is perpendicular to the plane of the loop. The magnetic force acting on the loop is

(1983, 1M)

(a) $\operatorname{ir} \mathbf{B} _0$

(b) $2 \pi i r \mathbf{B} _0$

(c) zero

(d) $\operatorname{\pi ir} \mathbf{B} _0$

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Answer:

Correct Answer: 82.(c)

Solution:

Formula:

Magnetic Moment Of A Current Carrying Loop:

  1. Magnetic force on a current carrying loop in uniform magnetic field is zero.


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