ASVAB For Dummies by Powers Rod

ASVAB For Dummies by Powers Rod

Author:Powers, Rod [Powers, Rod]
Language: eng
Format: mobi
Tags: Study Aids
ISBN: 9780470922163
Publisher: John Wiley and Sons
Published: 2010-12-12T16:00:00+00:00

A kilowatt-hour (kWh) — the amount of electricity a power plant generates or a customer uses — is equal to the energy of 1,000 watts working for one hour. Kilowatt-hours are determined by multiplying the number of kilowatts (kW) required by the number of hours of use. For example, if you use a 40-watt light bulb 5 hours a day, you've used 200 watt-hours, or 0.2 kilowatt-hours of electrical energy.

The term watt was named to honor James Watt, the inventor of the steam engine.

Getting around to circuits


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