Physics-
General
Easy
Question
In the adjoining circuit, the battery 
has an e.m.f. of 
and zero internal resistance while the battery E has an e.m.f. of 2volt. If the galvanometer G reads zero, then the value of the resistance X in ohm is
- 10
- 100
- 500
- 200
The correct answer is: 100
For no current through galvanometer, we have
Þ 
Þ X = 100 W
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