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Two circular coils carrying currents are...

Two circular coils carrying currents are of nearly same radius have common centre and released from rest with their planes perpendicular . Assuming that they can freely rotate about their diameter, select the wrong alternative.

A

Each will exert a torque on the other

B

Through out their rotation, angular momentum of the system is conserved

C

Angular momentum of system initially increases and then decreases

D

Potential energy of system first decreases

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NARAYNA-MOVING CHARGES AND MAGNETISM-C.U.Q-KEY
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