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A battery supplies 150 W and 196 W power...

A battery supplies 150 W and 196 W powers to two resistors of `6Omega and 4Omega` when they are connected separately to it. The internal resistance of battery is:

A

`1 Omega`

B

`0.5Omega`

C

`2.5Omega`

D

`2 Omega`

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