Question

4.3.2 test (cst): electromagnets question 12 of 20 what is the function of a switch in an electrical circuit? a. it interrupts the flow of electrons when it is open. b. it resists the flow of electrons when it is closed. c. it resists the flow of electrons when it is open. d. it interrupts the flow of electrons when it is closed.

Explanation:

A switch in an electrical circuit has two states - open and closed. When a switch is open, it breaks the circuit. In a circuit, electrons flow to create an electric current. If the circuit is broken (switch open), the flow of electrons (current) is interrupted. When the switch is closed, the circuit is complete and electrons can flow. Resistance to electron flow is mainly the property of resistors, not the normal function of a closed - switch.

Answer:

A. It interrupts the flow of electrons when it is open.