Question

A moving coil ammeter has a moving coil of dimensions 20 mm 15 mm with 150 turns. If a current of 4 ma is applied to the coil, find the angular deflection (in degree) of the pointer. The flux density in the air gap is 1.6 10-3 wb/m2 and the spring constant is 0.46 10-6 nm/rad.

Answer 1

Answer:

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