If a resistor of R ohms is connected across a battery of E volts with internal
Chapter 4, Problem 45(choose chapter or problem)
If a resistor of R ohms is connected across a battery of E volts with internal resistance r ohms, then the power (in watts) in the external resistor is P E2 R sR 1 rd 2 If E and r are fixed but R varies, what is the maximum value of the power?
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