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Question
The resistance of a resistor is reduced to half of its initial value. If other parameters of the electrical circuit remain unaltered, the amount of heat produced in the resistor will become ______.
Options
four times
two times
half
one forth
Solution
The resistance of a resistor is reduced to half of its initial value. If other parameters of the electrical circuit remain unaltered, the amount of heat produced in the resistor will become two times.
Explanation:
If V is constant, then H is inversely proportional to R because H = V2 t/R. H will therefore double if R does.
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