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A square loop of side a hangs from an in...

A square loop of side a hangs from an insulating hanger of spring balance. The magnetic field of strength `B` occurs only at the lower edge. It carries a current `I` . Find the change in the reading of the spring balance if the direction of current is reversed.

A

IaB

B

2IaB

C

`(IaB)/(2)`

D

`(3)/(2)IaB`

Text Solution

Verified by Experts

The correct Answer is:
B
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