what causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?\no a metal…

what causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?\no a metal striker that pulls on the magnet\no a diaphragm that vibrates around the magnet\no a current that rapidly switches direction\no a device that opens and closes a circuit

what causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?\no a metal striker that pulls on the magnet\no a diaphragm that vibrates around the magnet\no a current that rapidly switches direction\no a device that opens and closes a circuit

Answer

Answer:

C. a current that rapidly switches direction

Brief Explanation:

The direction of an electromagnet's poles depends on the direction of the current flowing through it. In an audio - speaker, an alternating current (AC) rapidly switches direction. This change in current direction causes the poles of the electromagnet to repeatedly switch directions, interacting with a permanent magnet to move the speaker cone and produce sound.