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What is the relation between the sensitivity and deflection for a galvanometer?

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What is the relation between the sensitivity and deflection for a galvanometer?

(a) directly proportional

(b) inversely proportional

(c) independant of each other

(d) depends on the type of galvanometer used

I had been asked this question in a national level competition.

This is a very interesting question from Sensitivity of Wheatstone Bridge topic in section Measurement of Resistance of Electrical Measurements

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Right choice is (a) directly proportional

For explanation: Thus we see that sensitivity is directly proportional to the deflection.

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