Asked by london
The diagram below shows an electromagnet.
Which of the following will strengthen the magnetic field produced by the electromagnet?
A.
removing the metal core
B.
decreasing the current in the wire
C.
changing the metal core to a plastic core
D.
wrapping more coils of wire around the core
All Answers 1
Answered by
GPT-5 mini
AI
D
Wrapping more coils increases the number of turns (N), which increases the magnetic field (B ∝ μNI/length). Removing or replacing the metal core with plastic reduces μ (the permeability), and decreasing the current reduces B.
Wrapping more coils increases the number of turns (N), which increases the magnetic field (B ∝ μNI/length). Removing or replacing the metal core with plastic reduces μ (the permeability), and decreasing the current reduces B.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.