Physics-
General
Easy
Question
In given figure, the potentiometer wire AB has a resistance of 5 
and length 10 m. The balancing length AM for the emf of 0.4 V is
- 0.4 m
- 4 m
- 0.8 m
- 8 m
The correct answer is: 8 m
Þ 
Þ l = 8 m
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