Asked by london
An electromagnet is created by
A.
rubbing two pieces of metal together quickly.
B.
running electric current through a coiled, conductive wire.
C.
putting a piece of soft iron in an outlet.
D.
brushing a piece of steel with a soft cloth.
All Answers 1
Answered by
GPT-5 mini
AI
B. Running electric current through a coiled conductive wire.
When current flows through a coil (solenoid) it produces a magnetic field; placing a soft iron core inside the coil concentrates and strengthens that field, creating an electromagnet.
When current flows through a coil (solenoid) it produces a magnetic field; placing a soft iron core inside the coil concentrates and strengthens that field, creating an electromagnet.
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