What does power mean?

POWER definition: 1. ability to control people and events: 2. the amount of political control a person or group has. Learn more.

What is power in physics?

Power is the amount of energy that is transferred per second. Learn about and revise the rate of energy transfer, and calculating power and efficiency with GCSE Bitesize Physics.

What is power in mechanical systems?

Power in mechanical systems is the combination of forces and movement. In particular, power is the product of a force on an object and the object's velocity, or the product of a torque on a shaft and the shaft's angular velocity. Mechanical power is also described as the time derivative of work.

What is a power rating?

The Per unit time or ‘per second’. For example, if 2,000 J are transferred over a period of 10 s, then the rate of transfer is 200 J/s or 200 W. This value is the power rating. The energy transferred each second, measured in watts (W). Power = work done ÷ time taken. So the more powerful a device is, the more energy it will transfer each second.

What is the difference between power and efficiency?

The rate at which energy is transferred is called power and the amount of energy that is usefully transferred is called efficiency. It is important to be able to calculate power and efficiency. When work is done on an object, energy is transferred. The Per unit time or ‘per second’.

How popular is power?

Power is 629 on the JustWatch Daily Streaming Charts today. The TV show has moved up the charts by 256 places since yesterday. In the United Kingdom, it is currently more popular than Preacher but less popular than The Nevers. 625. 626. 627. 628. 629. 630. 631. 632. 633.