Biology, 21.09.2019 16:20, jbainbynn3198

What is the function of an electromagnet in an electric doorbell? 1) it acts as a switch to open the circuit 2) it acts as a switch to close the circuit. 3) it repels a metal striker, which then pulls away from the bell 4) it attracts a metal striker, which then hits the bell.

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What is the function of an electromagnet in an electric doorbell? 1) it acts as a switch to open th...