Two identical coaxial circular loops carrying current i each circulating in clockwise direction.if the loops are approaching each other then
a)current will decrease
2)current will increase
3)current will remain the same..
i didn't understand how to apply lenz law in this prblm..

As coils approach each other, the flux linked with each coil increases. A current will be induced in each coil which will try to decrease the flux. This implies induced current in each coil will be opposite to initial current. So, current in each coil decreases as the coils approach each other.

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From which book is the question taken? Please let me know
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I want explanation for 2nd question , when current in both the coil is in opposite direction . please help me with this question.
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Current will decrease
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