Question

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 = 0.001 r (B) R = 1000 r
(C) R = 2r (D) R = r

Answer 1

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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:

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for step by step explanation refer to attachment

correct option is d) R= r

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