Lesson: Chapter 10 — Power and energy in electrical appliances

10.2. Electrical energy used by appliances 4 of 4 Reset answers

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Question 4

With P in watts and t in seconds, what is the unit of E = Pt?

A The kilowatt-hour B The ampere C The watt D The joule

The right answer is the one marked above.

The joule. One watt for one second is one joule.

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