A galvanometer is used in laboratory for detecting the null point in electrical experiments. If, on passing a current of 6 mA it produces a deflection of 2º, its figure of merit is close to :
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a
333º A/div
b
3×10−3 A/div
c
6×10−3 A/div
d
666º A/div
answer is B.
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Detailed Solution
Figure of merit of a galvanometer = reciprocal of current sensitivity =6mA2°=3×10−3A/degree
A galvanometer is used in laboratory for detecting the null point in electrical experiments. If, on passing a current of 6 mA it produces a deflection of 2º, its figure of merit is close to :