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)
The student can conclude that increasing the number of coils or turns of wire around the iron nail strengthens the electromagnet. Consequently, the enhanced electromagnetic field is able to exert a stronger magnetic force, enabling the electromagnet to pick up more paper clips. This is because the magnetic field strength of an electromagnet is directly proportional to the number of turns in the coil and the electric current passing through it. So, with more turns in the coil and a constant current from the battery, the overall strength of the magnetic field increases, allowing the electromagnet to lift a greater number of paper clips.
