Physics
Grade-7
Easy

Question

In which one of the following conditions the amount of heat produced in a current-carrying wire will increase?

  1. When terminals of are changed
  2. When the amount of current passing in the wire is increased
  3. When the amount of current passing in the wire is decreased
  4. All of these

hintHint:

Amount of current passing in the wire is increased

The correct answer is: When the amount of current passing in the wire is increased


    In a circuit if current is increased, heat will increase as heat is directly proportional to the square of current. So if current is double the heat produced will be four times.

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