25.78 ... An external resistor with resistance R is connected toa battery that has emf E and internal resistance r. Let P be theelectrical power output of the source. By conservation of energy,P is equal to the power consumed by R. What is the value of P inthe limit that R is (a) very small; (b) very large? (c) Show that thepower output of the battery is a maximum when R = r. What isthis maximum P in terms of E and r? (d) A battery has E = 64.0 Vand r = 4.00 N. What is the power output of this battery whenit is connected to a resistor R, for R = 2.00 N, R = 4.00 N, and4.00 Ω, andR = 6.00 N? Are your results consistent with the general resultthatyouderived in part (b)?

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Answered: 25.78 ... An external resistor with…

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