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Milady Electrology Practice Exam

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Which term represents the rate of electrical power equal to 1,000 watts?
Correct Answer:
Kilowatt (kw)
Explanation:
Power in electricity is measured in watts, which expresses how fast energy is being used. When that rate is 1,000 watts, we call it a kilowatt. The prefix kilo- means thousand, so a kilowatt equals 1000 watts. Volt is the unit of electrical potential difference, and ampere is the unit of current. Polarity describes the direction of electrical charge, not a measure of power. Also, kilowatt-hour is a unit of energy (consumed over time), not the instantaneous power. So the term for 1,000 watts is kilowatt.

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