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Question
The heat produced by passing an electric current through a fixed resistor is proportional to the square of:
(a) magnitude of resistance of the resistor
(b) temperature of the resistor
(c) magnitude of current
(d) time for which current is passed
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Solution
(c) magnitude of current
We know that:
H = I2Rt
It shows that the heat produced is proportional to the square of the current.
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