Moving Charges and Magnetism

Question: A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is

1) $N{A^2}{B^2}I$

2) $NAB{I^2}$

3) ${N^2}ABI$

4) NABI

Solution:

Explanation: No Explanation

Force and Torque on a Current Carrying Conductor

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