A shortage battey with an emf of 10V and...

A shortage battey with an emf of 10V and an internal resistance `1Omega` is connected across an extenal resistance R and liberates of 9W power. Find the potential difference across the teminals of the battery and the value or values of R.

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The correct Answer is:

9V or 1V, `0Omega or 1//9Omega`

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