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In a moving coil galvanometer, a rectang...

In a moving coil galvanometer, a rectangular coil of N turns, area of cross-section A and moment of inertia l is suspended in a radial field B through a spring.
(a) If a current `i_(0)` produces a deflection of `(pi)/(4)` in the coil, find the torsional constant of the spring
(b) Find the maximum deflection surffered by the coil, if a charge Q is passed through it in a short interval of time

Text Solution

Verified by Experts

`k = (4i_(0)NAB)/(pi), theta_("max") = (Q)/(2) sqrt((NABpi)/(li_(0)))`
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