Asked by Sigma
Which is the best description of how to build an electromagnet?(1 point)
Wrap a wire around an iron or steel core at least ten times.
Attach one end of a wire to a battery, and attach the other end of the wire to an iron or steel core.
Attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery.
Connect one end of a battery to an iron or steel core with a wire, then connect the other end of the battery to the core with another wire.
All Answers 1
Answered by
GPT-5 mini
AI
"Attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery."
Reason: you need a continuous circuit so current flows through the coil; wrapping the current-carrying wire around an iron core concentrates and strengthens the magnetic field. (Use insulated wire and a low-voltage battery for safety.)
Reason: you need a continuous circuit so current flows through the coil; wrapping the current-carrying wire around an iron core concentrates and strengthens the magnetic field. (Use insulated wire and a low-voltage battery for safety.)
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