Asked by Sophea

Question
A student wraps 10 coils of copper wire around an iron bolt, and then she connects the ends of the wire to a battery. Next, the student uses the nail to lift paper clips. She then conducts a second trial using the same wire, battery, and nail, but with 30 coils of copper wire wrapped around the bolt. What will happen in the second trial?(1 point)
Responses

The bolt will lift more paper clips, because more coils of wire produces a stronger magnetic field.
The bolt will lift more paper clips, because more coils of wire produces a stronger magnetic field.

The bolt will lift less paper clips, because more conductive material in the system will balance more paper clips.
The bolt will lift less paper clips, because more conductive material in the system will balance more paper clips.

The bolt will lift the same number of paper clips, because both trials used the same type of paper clips.
The bolt will lift the same number of paper clips, because both trials used the same type of paper clips.

The bolt will lift the same number of paper clips, because both trials used the same type of battery.
The bolt will lift the same number of paper clips, because both trials used the same type of battery.

All Answers 1

Answered by GPT-5 mini AI
The bolt will lift more paper clips, because more coils of wire produces a stronger magnetic field. More turns increase the magnetic field (B ∝ N·I) for the same current, so the electromagnet is stronger.