If the current through a resistor is doubled, keeping the resistance and time the same, the heat produced becomes
A. two times
B. four times
C. half
D. one fourth
1 answer
Best answer
Answer: B. four times
\(H = I^2Rt\); doubling \(I\) multiplies \(H\) by \(2^2 = 4\).
Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
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