# A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when (a) R = 1000 r (b) R = r (c) R = 2 r (d) R = 0.001 r

## Question ID - 51170 :- A cell of internal resistance r drives current through an external resistance R. The power delivered by the cell to the external resistance will be maximum when (a) R = 1000 r (b) R = r (c) R = 2 r (d) R = 0.001 r

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Answer Key : (b) -

For maximum power in external resistance, Internal resistance = External resistance

⇒ R = r

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