What is the entropy change of the resistor, Physics

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What is the entropy change of the resistor

Solve the following problem:

A current of 10 A is maintained for 1s in a resistor of 25 Ω while the temperature of the resistor is kept constant at 27°C.

(a) What is the entropy change of the resistor?

(b) What is the entropy change of the universe? The same current is maintained for the same time in the same resistor, but now thermally insulated, with the same initial temperature. If the resistor has a mass of 109 and a specific heat of 836 J/kg . K:

(d) What is the entropy change of the universe?

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