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In a potentiometer a cell of emf 1.5 V b...

In a potentiometer a cell of emf `1.5` V balances at a lengths of 270 c. if another cellbalances at 360 cm for the same current its emf will be

A

1 V

B

2V

C

3 V

D

`0.75V`

Text Solution

Verified by Experts

The correct Answer is:
B
`(E_(1))/(E_(2))=(l_(1))/(l_(2)) rArr (1.5)/(E_(2))=(270)/(360)`
`E_(2)=(360xx1.5)/(270)=2V`
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