Lesson: Chapter 10 — Power and energy in electrical appliances

10.4. The household supply 1 of 4 Reset answers

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Question 1

What is the voltage and frequency of the household supply?

A 132 kV, 0 Hz B 230 V, 50 Hz C 12 V, 60 Hz D 11 kV, 50 Hz

The right answer is the one marked above.

230 V, 50 Hz. It is alternating current; the higher voltages are used on the grid.

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