The animation shows the circuit inside a speaker. The speaker cone vibrates as the current changes direction. This creates sound waves. Explain how the electromagnet causes movement back and forth as the electric current changes.

Question

Engineering

Clyde

16 January, 08:10

The animation shows the circuit inside a speaker. The speaker cone vibrates as the current changes direction. This creates sound waves. Explain how the electromagnet causes movement back and forth as the electric current changes.

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Answers (1)

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Christine Brennan · Answer 1

The direction of the magnetic field around the coil reverses. The force on the cone now pulls it back in. Repeatedly alternating the current direction makes the cone vibrate in and out. The cone vibrations cause pressure variations in the air, which are sound waves.

Explanation:So as it goes back and forth it makes a sound from the vibration.