Physics · Magnetism and Electricity
An electromagnet is formed by which of the following processes?
- 1Passing electric current through a coil wound around a glass rod
- 2Placing a permanent magnet near a current-carrying conductor
- 3Passing electric current directly through a permanent magnet
- 4Passing electric current through a coil wound around a soft iron core✓
Correct answer
Passing electric current through a coil wound around a soft iron core
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