47
QuizMultiple Choice

N/A — Exam

Question 47 • Physical Science

Which best explains why no current is induced?

Answer
A
The magnet needs to be held above the coils of wire.
B
The wire needs to be straight, not coiled.
C
The magnet needs to be moved through the coils of wire.
D
The wire needs to be coiled less tightly.

Explanation

An electric current is induced when the magnetic field through a coil changes. Moving the magnet through the coils changes the magnetic field there, so a current can be produced; simply holding the magnet still would not. Therefore, the best choice is “The magnet needs to be moved through the coils of wire.”

AI-written and checked against the verified answer.

Previous
Next