A resistor of resistance R is supplied by a battery which consists of voltage source E in series with an internal resistance r. Plot the power P as a function of resistance R for 2 Ω < R < 20 Ω given that E = 24 V and r = 4.5 Ω. When does maximum power transfer occur?

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A resistor of resistance R is supplied by a battery which consists of voltage source E in series with an internal resistance r. Plot the power P as a function of resistance R for 2 Ω < R < 20 Ω given that E = 24 V and r = 4.5 Ω. When does maximum power transfer occur?

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