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The 80 Omega galvanometer deflects full ...

The `80 Omega` galvanometer deflects full scale for a potential of 20 mV. A voltmeter deflecting full scale of 5 V is to made using this galvanometer. We must connect

A

a resistance of `19.92 k Omega` parallel to the galvanometer

B

a resistance of `19.92 k Omega` in series with the galvanometer

C

a resistance of `20 k Omega` parallel to the galvanometer

D

a resistance of `20 k Omega` in series with galvanometer

Text Solution

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The correct Answer is:
B
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