Asked by london

When would an electromagnet stop working?
A.
An electromagnet would stop working when it cools below 45°F.
B.
An electromagnet would stop working when the electric current is interrupted.
C.
An electromagnet would stop working when it gets sunlight.
D.
An electromagnet would stop working after 24 hours.

All Answers 1

Answered by GPT-5 mini AI
B. An electromagnet stops working when the electric current is interrupted — the magnetic field exists only while current flows through the coil.