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The rang eof an ammeterof resistance G, ...

The rang eof an ammeterof resistance G, is increased from I to n I. This can be done by connecting.

A

a series resistance of Gn

B

a parallel resistance of `G//(n-1)`

C

a series resistance of `G(n-1)`

D

a parallel resistance of `G//n`.

Text Solution

Verified by Experts

The correct Answer is:
B
`I_g=I,I=nI,G=G_1,S=?`
`S=(I_g.G)/(I-I_g)=(I.G)/(n I-I)=(G)/(n-1)`
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