Question

A galvanometer of resistance 80 ohm ,shunted by a resistance 20 ohm is joined in series with a resistance 200 ohm and a cell 1.5V . what is the sensitivityof the galvanometer if it shows a deflection of 30 divisions .

Answer 1

The answer is 4.500 galvanometer of resistance

Answer 2

Answer:

4320

Explanation:

Sensitivity=Deflection/Current

Deflection is given to be 30.

Now,   R(total)=(G+S (in parallel))+Ext. resistance(in series)

=216

Therefore, I=V(1.5)/R(216)

=0.0069 amp

Therefore sensitivity of galvanometer=30/0.0069

4320

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