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Q.

Which of the following statements is true? Heat produced in a current carrying conductor depends upon

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a

the time for which the current flows in the conductor

b

the resistance of the conductor

c

the strength of the current

d

the nature of current (ac or dc)

answer is A, B, C.

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Detailed Solution

Heat produced in a conductor of resistance R in time t when a current I flows through it, Q=I2Rt

Heat produced in a conductor is independent of the nature of current. If the current flowing in a conductor changes its direction (as in alternating current), then the heat being produced in it will not change.

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