Difference Between Work and Power

Power and work are two important concepts in mechanics. The main difference between the two is time. Both these terms are closely related to each other but note that they cannot be used interchangeably. Work is defined as the energy required to move an object from one point to another, whereas, power is the energy transferred per unit time.

Difference between Momentum and Inertia

Let us look at more differences between them in the table given below



Work is a scalar quantity.

Power is a scalar quantity.

The SI unit of work is Joule (J).

The SI unit of power is Watt (W).

The equation to calculate work is

Work = Force × Displacement.

The equation to calculate power is

Power = Work/Time

Work can also be measured in units like electron volt (eV), kWh, MWh and GWh.

Energy is also measured in units likekW, MW and GW.

The difference between between work and power should be understood clearly as these are an important topic in Physics. To Know more about work and power, Visit BYJU’S.

Practise This Question

Inexhaustible resources are in unlimited quantity and are not likely to be exhausted by human activities. Identify the most appropriate option which is an exhaustible resource.