What does the direction of the magnetic field depend on?

A. The direction of the magnetic field will depend on the poles of the wire
B. The direction of the magnetic field will depend on the direction of the current flow
C. The direction of the magnetic field will depend on the direction of the magnetic domains
D. The direction of the magnetic field will depend on the magnetic properties of the wire

Question

What does the direction of the magnetic field depend on?

A. The direction of the magnetic field will depend on the poles of the wire
B. The direction of the magnetic field will depend on the direction of the current flow
C. The direction of the magnetic field will depend on the direction of the magnetic domains
D. The direction of the magnetic field will depend on the magnetic properties of the wire

egenriether · Answer

Well I assume the problem is talking about an electromagnet (i.e. current traveling in a wire) in which case, by Amperes law, the direction of the field (north/south) will depend on the direction of the current.

radar · Answer

I think you're right.