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What is the entropy change of the resistor and the universe

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Reference no: EM13961015

A thermally insulated resistor of 20 ohms has a current of 5 A passed through it for 1 s. It is initially at 20 degrees C.

a) what is the temperature rise?

b) what is the entropy change of the resistor and the universe?

Mass of resistor if 5 g; Cp for the resistor is 0.8x10^3 JKg-1K-1

(Hint: In the actual process, dissipative work is done on the resistor. Imagine a reversible process taking it between the same equilibrium states)

Reference no: EM13961015

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