Question

4.2.2 Quiz: Electromagnetism

Question 7 of 10
If a wire lies within a magnetic field, what must be true for the magnetic f
to produce an electric current in the wire?
OA. The field must not be moving.
B. The field must be moving.
C. The field must be produced by induced magnetism.
D. The field must be produced by an electromagnet.

Answer 1

An electric current can be produced in a wire lying within a magnetic field if the magnetic field is moving.

Step-by-step explanation:

If a wire lies within a magnetic field, an electric current can be produced in the wire. In order for this to happen, the magnetic field must be moving. When a magnetic field moves across a wire, it creates a changing magnetic flux, which induces an electric current in the wire. This is known as electromagnetic induction.

Learn more about Electromagnetic induction