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 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.
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 less paper clips, because more conductive material in the system will balance more paper clips.
1 answer
The correct response is:
The bolt will lift more paper clips, because more coils of wire produces a stronger magnetic field.
In electromagnetism, the strength of the magnetic field generated by a coil of wire (solenoid) increases with the number of turns (coils) of the wire. Therefore, by increasing the number of coils from 10 to 30, the magnetic field strength will increase, allowing the bolt to lift more paper clips in the second trial.
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