A student builds different electromagnets using a 9 volt battery connected to an iron nail and with coils wrapped around it. Each electromagnet has a different number of coils wrapped around the nail. Which electromagnet will pick up the most paper clips?

Question

Electromagnet - Number of coils
A - 10
B - 20
C - 30
D - 40
(1 point)
Responses

A
A

B
B

C
C

D

Answer 1

The electromagnet that will pick up the most paper clips is likely the one with the most coils. As the number of coils wrapped around the nail increases, the magnetic field strength generally increases, which enhances the electromagnet's ability to attract ferromagnetic materials like paper clips.

Given the options:

• A - 10 coils
• B - 20 coils
• C - 30 coils
• D - 40 coils

The answer would be:

D - 40 coils

This electromagnet should pick up the most paper clips due to having the highest number of coils.