Question

Derive the expression for Joules law of heating with the help of circuit diagram and state the unit of power.​

Answer 1

Answer:

A quantitative form of Joule's law is that the heat evolved per second, or the electric power loss, P, equals the current I squared times the resistance R, or P = I2R. ... The power P has units of watts, or joules per second, when the current is expressed in amperes and the resistance in ohms.

Answer 2

Answer:

A quantitative form of Joule's law is that the heat evolved per second, or the electric power loss, P, equals the current I squared times the resistance R, or P = I2R. ... The power P has units of watts, or joules per second, when the current is expressed in amperes and the resistance in ohms.