Lesson: Chapter 10 — Power and energy in electrical appliances

10.1. The power of an electrical appliance 5 of 5 Reset answers

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Question 5

Why does all the energy used by a heater's element become heat?

A It has a motor B It is only a resistor C It gives out light D It uses no current

The right answer is the one marked above.

It is only a resistor. In other appliances only part of the energy is turned to heat by their resistance.

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