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

Question

Quizplus · Accepted Answer

Solenoids convert electrical energy into mechanical work, while relays use electrical signals to control the flow of electricity in a circuit.

The Principal Difference Between a Solenoid and a Relay Is