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How can we make a galvanometer with G=20...

How can we make a galvanometer with `G=20 Omega` and `i_g=1.0 mA` into a voltmeter with a maximum range of `10 V`?

A

By connecting a resistance of `9980 Omega` in parallel with galvanometer

B

By connecting a resistance of `9980 Omega` in series with galvanometer

C

By connecting a resistance of `10020 Omega` in parallel with galvanometer

D

By connecting a resistance of `10020 Omega` in series with galvanometer

Text Solution

Verified by Experts

The correct Answer is:
B
Using `R=(V)/(i_(g))-G`
We have, `R=(10)/(10^(-3))-20=9980Omega`
Thus, a resistance of `9980Omega` is to be connected in series with the galvanometer to convert it into the voltmeter of desired range.
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