Questions
The resistance of a moving coil galvanometer is 20Ω. It requires 0.01 A current for full scale deflection. Calculate the value of resistance required to convert it into a voltmeter of range 20 volt:
detailed solution
Correct option is A
V = i (R + G)20 = (0.01) (20 + R)R=1980ΩTalk to our academic expert!
Similar Questions
A voltmeter has an internal resistance of 1000 Ω and gives full scale deflection when 2 V is applied across the terminals. Now a resistance of 4000 Ω is connected in series with it. Then it gives full scale deflection with
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