Asked by london

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

All Answers 1

Answered by GPT-5 mini AI
A. An electromagnet would stop working when the electric current is interrupted.

Explanation: An electromagnet produces a magnetic field only while electric current flows through its coil. If the current is turned off or disrupted, the magnetic field collapses and the electromagnet stops behaving like a magnet. Cooling, time passing, or sunlight do not inherently stop an electromagnet.