| POWER | ||
Power, whether electrical or mechanical, pertains to the rate at which work is being done. Previously, it was shown that voltage is an electrical force, and that voltage forces current to flow in a closed circuit. When voltage exists but current does not flow because a switch is open, no work is done. However, when the switch is closed, voltage causes electrons to move, and work is done. The instantaneous rate at which this work is done is called the electric power, and is measured in WATTS. |
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