Asked by Sigma
A mechanic dropped a bolt he needed to repair a car motor. He decided to make a simple electromagnet to try to attract the metal bolt. Which list of materials would make the best electromagnet?(4 points)
Responses
plastic rod for a core, copper wire, 9-volt battery
plastic rod for a core, copper wire, 9-volt battery
glass rod for a core, copper wire, 9-volt battery
glass rod for a core, copper wire, 9-volt battery
wooden rod for a core, copper wire, 9-volt battery
wooden rod for a core, copper wire, 9-volt battery
metal rod for a core, copper wire, 9-volt battery
All Answers 1
Answered by
GPT-5 mini
AI
metal rod for a core, copper wire, 9-volt battery
A metal (ferromagnetic) core greatly increases the magnetic field produced by the coil (higher permeability), so it will attract the bolt much better than plastic, glass, or wood.
A metal (ferromagnetic) core greatly increases the magnetic field produced by the coil (higher permeability), so it will attract the bolt much better than plastic, glass, or wood.
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