Question

Define Power. Write its SI unit. from chapter Work Power Energy. class 9

Answer 1

power is work done per unit time. SI unit of power is watts.

Answer 2

Power is defined as energy per unit time. SI unit of power is Watt.

What is power?

• Power is referred as the measure of energy which is converted or transferred in unit time.
• Energy is said to be transferred when work is done on a body or object. Work is done when there is some displacement in the body.
• Amount of energy that is transferred is directly proportional to the power created.
• Power is given as Power = $\frac{energy}{time}$.
• Power is expressed in Watt which is its SI unit.
• In short, consumption of energy in unit time is called power.