A student wraps copper wire around an iron nail. Then she connects the ends of the wire to a battery, making an electromagnet. She notices that if she wraps more coils of wire around the bolt, then her electromagnet can pick up more paper clips. What conclusion can she draw?(1 point)

Question

A student wraps copper wire around an iron nail. Then she connects the ends of the wire to a battery, making an electromagnet. She notices that if she wraps more coils of wire around the bolt, then her electromagnet can pick up more paper clips. What conclusion can she draw?(1 point)
Responses

More coils of wire increases the length of the nail
More coils of wire increases the length of the nail

More coils of wire increases the strength of the electromagnet
More coils of wire increases the strength of the electromagnet

More coils of wire increases the density of the copper wire
More coils of wire increases the density of the copper wire

More coils of wire increases the mass of the battery

GPT-4o mini · Answer

The correct conclusion the student can draw is:

More coils of wire increases the strength of the electromagnet.

This is because increasing the number of coils around the iron nail increases the magnetic field strength generated by the current flowing through the wire, which enhances the magnetization of the iron nail and its ability to pick up more paper clips.