Question

In a moving coil galvanometer, torque on the coil can be expressed as τ = ki, where i is the current through the wire and k is constant. The rectangular coil of the galvanometer having number of turns N , area A and moment of inertia I is placed in magnetic field B.If for current $i_0$ deflection is $\pi/2$, find out torsional constant of spring.

Answer 1

Explanation:

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