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The potential difference across the term...

The potential difference across the terminals of a battery is 10 V when there is a current of 3 A in the battery from the negative to the positive terminal. When the current is 2A in the reverse direction, the potential difference becomes 15 V. The internal resistance of the battery is

A

`1ohm`

B

`0.4ohm`

C

`0.6ohm`

D

`0.8ohm`

Text Solution

Verified by Experts

The correct Answer is:
A
`E - 3r = 10 ……(i)
E + 2r = 15 …… (ii)`
solving (i) & (ii) r = 1
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