Question

What is figure of merit of a galvanometer? [DoE]

Answer 1

Answer:

Figure of merit of a galvanometer is the reciprocal of current sensitivity.

It is defined as the current which produces a deflection of one scale division in the galvanometer and is given by

G = K/NBA = I/θ

K = Torsion constant

θ = deflection angle

N = Total no. of turns in coil

B = Magnetic field

A = Area of coil.

I = Current

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