If a resistor is connected to a voltage source and the resistance is halved while the voltage remains constant, what happens to the heat produced in a fixed time?

Question

If a resistor is connected to a voltage source and the resistance is halved while the voltage remains constant, what happens to the heat produced in a fixed time? — Exam MCQ

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A. The heat produced increases to twice its previous value — For constant voltage, heat in a fixed time is H = V²t/R. Halving R therefore doubles the heat produced.

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B. The heat produced decreases to half its previous value

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C. The heat produced increases to four times its previous value

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D. The heat produced remains unchanged

If a resistor is connected to a voltage source and the resistance is halved while the voltage remains constant, what happens to the heat produced in a fixed time?

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