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A student is asked to connected four cel...

A student is asked to connected four cells of emf of 1 V and internal resistance 0.5 ohm in series with an external resistance of 1 ohm. But one cells is wrongly connected by him with its terminal reversed, the current in the ciruit is

A

`1/3 A`

B

`2/3` A

C

`3/4` A

D

`4/3` A

Text Solution

Verified by Experts

The correct Answer is:
B
`i=((N-2n)E)/(R+Nr) = ((4-2) xx 1)/(1+4 xx 0.5) = (2 xx 1)/3`
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