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A current of 2A flows through a 2 Omega ...

A current of 2A flows through a `2 Omega` resistor when connected across a battery. The same battery supplies a current of 0.5A when connected across a `9Omega` resistor The internal resistance of the battery is

A

`1/3 Omega`

B

`1/4Omega`

C

`5 Omega`

D

`0.5 Omega`

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The correct Answer is:
A
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