Question

The moving charge in the wire causes the compass to deflect; this is because

Answer 1

Answer:

The moving charge induces a magnetic field

Explanation:

According to Faraday's Law, the moving charges in a closed circuit (conductor) induces a magnetic field.

There is a potencial difference called electromotive force, wich is proportional to the magnetic flux through a surface. Matematically this coud be written as

$\epsilon = -\frac{d\Phi}{dt}$

where $\epsilon$ is the EMF, and $\Phi$ is the magnetic flux (the derivative on t means that the magnetic flux is changing in time).

This means that the moving charges, generates an EMF that is proportional to the magnetic flux change.

Therefore, A is the correct answer.

Answer 2

The answer is A. the moving charge induces a magnet field .