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power

Power
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Power

Suppose you're lifting boxes quickly onto a shelf, while someone else is lifting them slowly. You’re both doing the same amount of work. So what distinguishes you from that slow person?

The answer is power. Power is the measurement (in watts) of how fast work gets done. It might get done on an object, or an electric current.

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Watt’s a Joule?

Watt’s a Joule?

Looking for a clear and fun explanation of energy, work, and power, including electric power? You found it. More...

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Exploratorium
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Work, energy, and power all go into a slapshot, which can turn a hockey puck into a missile speeding along at 100 miles per hour (about 160 kph). You'll learn about slapshots and science here. More...

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Physicists define work and power a bit differently than you might. This video makes it easy to understand what the physicists are talking about. More...

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University of New South Wales
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Power is work over time. It's also force times average velocity. Get help with your power equations here. More...

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Electrical power — like mechanical power — is the speed at which work is performed. Been confused by your family's electric bill? This site explains it. More...

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Get the basics about power and how it relates to work and energy. Then check your understanding with a quiz. More...

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