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ELECTRICITY When a resistor of R ohms is connected across a battery with electromotive force E volts and internal resistance r ohms, a current

ELECTRICITY When a resistor of R ohms is connected across a battery with electromotive force E volts and internal resistance r ohms, a current of 1 amperes will flow, generating P watts of power, where E 1 = and P = PR r + R Assuming r is constant, what choice of R results in maximum power?

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