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A galavanometer, whose resistance is 50 ...

A galavanometer, whose resistance is 50 ohm has 25 divisions in it. When a current of `4xx10^(-4)` A passes through it,its needle (pointer) deflects by one division. To use this galvanometer as a volmeter of range `2.5V`, it is should be connected to a resistance of :

A

250 ohm

B

200 ohm

C

6200 ohm

D

6250 ohm

Text Solution

Verified by Experts

The correct Answer is:
B

`V = I_(g) (R + G)`
`2.5 V = 4 xx 10^(-4) xx 25 xx (R + 50)`
`rArr R = 200 Omega`
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