Lesson: Chapter 13 — Electromagnetism and electromagnetic induction

The loudspeaker and a simple motor 3 of 4 Reset answers

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Question 3

In activity 13.4, why is only half of each wire end stripped?

A So no current flows in the half turn when the couple would push it back B To make the coil lighter C To save copper D So the coil does not get hot

The right answer is the one marked above.

So no current flows in the half turn when the couple would push it back. The coil coasts through that half turn on its momentum.

Answer the question to continue.