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Direct Current vs. Alternating Current

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Question

A current carrying wire gets heated up due to:

A

its weight.

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B

its colour.

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C

direction of current through it.

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D

its resistance to current flow.

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Solution

The correct option is D its resistance to current flow.
A current carrying wire gets heated up only due to the resistance that it offers to the current flowing through it. Due to resistance of the conductor the electrical energy is converted to heat energy.

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