The principal difference between a solenoid and a relay is that:
A)relays relay electricity, solenoids do not.
B)solenoids do electrical work, relays do mechanical work.
C)solenoids do mechanical work, relays do electrical work.
D)relays use magnets, solenoids do not.

Question

Quizplus · Accepted Answer

Solenoids convert electrical energy into mechanical work, typically by moving a plunger, while relays use an electromagnetic coil to open or close electrical contacts, thus controlling the flow of electricity.

The Principal Difference Between a Solenoid and a Relay Is