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Concepts Of Physics MCQ Edition [Volume 2]PhysicsThermal and Chemical Effects of Electric Current

The heat generated in a system is directly proportional to the electric current passing through it.

Options

  1. AIt cannot be Joule heat
  2. BIt cannot be Thomson heat
  3. CIt can be any of the three heats mentioned above
  4. DIt cannot be Peltier heat

Correct answer

A. It cannot be Joule heat

Step-by-step solution

Joule heat is given by the formula H = I^2 R t , which means the heat generated is directly proportional to the square of the electric current ( H I^2 ). Peltier heat is given by H = I t , which means the heat generated is directly proportional to the electric current ( H I ). Thomson heat is given by H = I T t , which means the heat generated is also directly proportional to the electric current ( H I ). Since the given heat generated is directly proportional to the electric current passing through the system, it

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