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  • Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response, the loop B :<div class='qna-option'

Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response, the loop B :

Option: 1

 remains stationary 


Option: 2

is attracted by the loop A


Option: 3

 is repelled by the loop A 


Option: 4

 rotates about its CM, with CM fixed


Answers (1)

best_answer

For understanding, let use assume that the two loops are lying in the plane of paper as shown. The current in loop 1 will produce • magnetic field in loop 2. Therefore, increase in current in loop 1 will produce an induced current in loop 2 which produces \otimes magnetic field passing through it i.e. induced current in loop 2 will also be clockwise as shown in the figure.
                    
The loops will now repel each other as the currents at the nearest and farthest points of the two loops flow in the opposite directions.

Posted by

Gautam harsolia

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