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In an experiment according to set up, wh...

In an experiment according to set up, when `E_(1)=12` volt and internal resistance zero, E = 2 volt. The galvanometer reads zero, then X would be-

A

10

B

100

C

500

D

200

Text Solution

Verified by Experts

The correct Answer is:
B
For no current through galvanometer-
`[E_(1)/(500 + X)]X = E rArr (12/(500 + X))X = 2`
`rArr 12X = 1000 + 2X rArr X = 100 Omega`
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