According to which of the following laws, heat produced by an electric current is directly proportional to the resistance of the conductor, the square of the current, and the time for which it flows?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Joule's Law.
According to Joule's Law, the square of the current flowing through a conductor, its resistance, and the duration of the current flow all directly relate to the amount of heat that the conductor produces.
- It is expressed by the formula Q = I2Rt
- where Q is the heat generated, I is the current, R is the resistance, and t is the time.