Lesson: Chapter 13 — Electromagnetism and electromagnetic induction

The AC generator 3 of 4 Reset answers

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Question 3

How often does the current from an AC dynamo change direction?

A Never B Every half turn C Every quarter turn D Every full turn

The right answer is the one marked above.

Every half turn. After half a turn, AB and CD have swapped sides and move the opposite way.

Answer the question to continue.