# Power Calculation

How do you find the power?

## How to Calculate Power?

In Physics, Power is defined as the rate of work done. It is defined as the amount of energy consumed per unit time. In simple, it is the ratio of work done by time taken. The SI unit of power is joule per second (J/s), also known as the watt. The term power is most commonly used in electrical and mechanical systems to determine the energy consumed per unit of time.

In Physics, Power or Energy can be calculated in four different ways.

**Power Based On Work and Time**

Power or Energy as a funciton of time, which is the rate of change of work done over a given time period.

**P = Work Done / Time Take**

**Power Based On Force, Displacement and Time**

Work is define as the force applied on an object over a distance.

**P = Force x Displacement / Time Taken**

**Power Based On Force and Velocity**

The distance per unit time is defined as the velocity, and hence

**P = Force x Velocity**

**Power Based On Mass, Acceleration and Velocity**

According to Newtons 2nd law of motion, Force is mass times the acceleration, and hence,

**P = Mass x Acceleration x Velocity**

**How To Calculate Power Based On Work And Time?**

**How To Calculate Power Based On Force, Displacement And Time?**

How To Calculate Power Based On Force And Velocity?

How To Calculate Power Based On Mass, Acceleration And Velocity?