Question

hat makes a wire magnetic when you run electricity through it?

a
It allows for the metal to become a magnet
b
It makes the domains opposite and polar
c
It causes a swirling of the electrons to give it a magnetic field
d
It makes the domains align

Answer 1

Correct answer: c.

Running a current means charges (electrons) are moving. Moving charges produce a magnetic field — around a straight wire the field forms concentric circles (use the right‑hand rule to see the direction). Domain alignment (d) is how a ferromagnetic material becomes a permanent magnet when exposed to a magnetic field, but the fundamental cause of the wire’s magnetism is the motion of the charges.