The range of a voltmeter of resistance G ohm is V volt. The resistance required to be connected in series with it in order to convert it into voltmeter of range n V volt will be
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a
(n-1)G
b
G/n
c
nG
d
G/(n-1)
answer is A.
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Detailed Solution
Here V=igG………….(1)and nV=ig(G+R)……(2)Dividing, we getn=G+RG=1+RGor (n−1)=RG∴ R=(n−1)G
The range of a voltmeter of resistance G ohm is V volt. The resistance required to be connected in series with it in order to convert it into voltmeter of range n V volt will be