Lesson: Chapter 10 — Power and energy in electrical appliances

10.3. Efficiency and saving energy 2 of 4 Reset answers

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Question 2

Why is an immersion heater so efficient at heating water?

A It uses a magnetic field B It uses no electricity C All the heat from its element goes into the water D It works faster

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All the heat from its element goes into the water. The element sits in the water, so little heat is lost to the air.

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