A current of 2A flows through a 2 ohm re...

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

`0.5 Omega`

`1//3Omega`

`1//4Omega`

`1Omega`

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