Lesson: Chapter 10 — Power and energy in electrical appliances

10.5. Measuring energy in kilowatt-hours 4 of 4 Reset answers

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Question 4

Four 100 W lamps are lit 3 hours a day. How many units is that in a 30-day month?

A 12 kWh B 1.2 kWh C 360 kWh D 36 kWh

The right answer is the one marked above.

36 kWh. 1.2 kWh a day × 30 days.

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