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.

4) it attracts a metal striker, which then hits the bell.

Explanation:

An electric doorbell uses an electromagnet. When the switch is pressed, the circuit gets complete which generates electric current in the wire. The wire is coiled around a metal. When current flows through the coiled wire, magnetic field is generated. This magnetic field attracts the striker which then hits the bell and sound is produced.

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: