Question: The electric power P (in W) produced by a certain battery is given by P - 144r ( 74 0.8) , where r is the

The electric power P (in W) produced by a certain battery

The electric power P (in W) produced by a certain battery is given by P - 144r ( 74 0.8) , where r is the resistance in the circuit. For what value of r is the power a maximum? r=

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