Multiple choice

Which of the following formulas is used for heat produced in a wire?

  1. I2 x R x t

  2. I x t

  3. V x I

  4. V x I x t

  5. W/t
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A Correct answer
Explanation

It is clear that the heat produced in a wire is directly proportional to the square of current, resistance of wire and time for which the current is made to flow.

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