What resistance r gives the maximum power

Reference no: EM13842587

A de-generator with an internal resistance r develops V volts. If the variable resistance in the circuit is R, the power generated is P=V^2/(R+r). What resistance R gives the maximum Power?

The answer is apparently 0.Why?

Reference no: EM13842587

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What resistance r gives the maximum power : A de-generator with an internal resistance r develops V volts. If the variable resistance in the circuit is R, the power generated is P=V^2/(R+r). What resistance R gives the maximum Power?

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