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Question

The resistance of a conductor is reduced to half its initial value keeping the current constant. In doing so the heating effects in the conductor will become

A
half
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B
double
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C
one-fourth
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D
four times
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Solution

The correct option is A half
Heat produced=H=i2Rt

Keeping i constant HR

Hence, on reducing resistance to half, Heat produced also becomes half of initial value.

Answer-(A)

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