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In the given circuit, the reading of ide...

In the given circuit, the reading of ideal voltmeter is `E//2`. The internal resistance of the battery is

A

`1 Omega`

B

`2/3 Omega`

C

`2/5 Omega`

D

`5/2 Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
a. `epsilon/2 = epsilon-ir or i=epsilon/(2r)`
`2epsilon = i(3+r)`
`r = 1Omega` ,
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