A galvanometer of resistance 200 Ω gives full scale deflection with 15 milli-ampere current. In order to convert it into a 15 V range voltmeter, the value of resistance connected in series is

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800 Ω

1000 Ω

1500 Ω

2500 Ω

answer is A.

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Detailed Solution

We know thatR=Vig−G=1515×10−3−200∴ R=800Ω

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