When a current of 5mA is passed through a galvanometer having a coil of resistance 15 Ω Ω , it shows full scale defection. The value of the resistance to be put in series with the galvanometer to convert it into a voltmeter of range 0 – 10 V is:
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Verified by ExpertsThe correct answer is:
B
Full deflection current, I g = 5mA
I g = 5mA
Resistance of galvanometer, G = 15 Ω Ω .
G = 15 Ω Ω .
R = 
= 
= 2000 – 15
= 1985 Ω Ω
= 1.985 × 10 3 Ω Ω
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