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A 4 m long wire of resistance 8Omega is ...

A 4 m long wire of resistance `8Omega` is connected in series with a battery of emf 2V and a resistor of `7Omega`. The internal resistance of the battery is `1Omega`. What is the potential gradient along the wire ?

A

0.25V`m^(-1)`

B

0.50V`m^(-1)`

C

0.75V`m^(-1)`

D

1.00V`m^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A

`K=(V_(AB))/(L)=(iR_(AB))/(L)=((2)/(8+1+7))xx(8)/(4)`
=0.25 V/m
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