what causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?\n a metal…

what causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?\n a metal striker that pulls on the magnet\n a diaphragm that vibrates around the magnet\n a current that rapidly switches direction\n a device that opens and closes a circuit

what causes the poles of the electromagnet in an audio speaker to repeatedly switch directions?\n a metal striker that pulls on the magnet\n a diaphragm that vibrates around the magnet\n a current that rapidly switches direction\n a device that opens and closes a circuit

Answer

Answer:

C. a current that rapidly switches direction

Brief Explanations:

The direction of an electromagnet's poles depends on the direction of the current. Rapid - current direction changes cause pole - direction changes in an audio speaker's electromagnet.