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0 votes
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in Physics by (69.5k points)

A conducting loop carrying a current I isplaced in a uniform magnetic field pointing into the plane of the paper as shown. The,loop will have a tendency to

(a) expand 

(b) move towards + ve x-axis 

(c) contract 

(d) move towards -ve x-axis

1 Answer

+1 vote
by (74.3k points)
selected by
 
Best answer

Correct option  (a) expand 

Explanation:

In a uniform magnetic field net force on a current carrying loop is zero. Hence translational motion is not possible.

From Fleming left hand rule, the force on each element of the loop is radially outward and hence the loop will have tendency to expand.

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