Question

Why does a compass needle move when placed near an electric current?

Answer 1

Answer:

A compass needle is simply a magnet that is shaped like a needle that is suspended by a very low friction bearing. This bearing allows the needle to spin freely on it's vertical axis. The earth is also a very large magnet. This is caused by the motion of magma moving under the earths surface

Answer 2

Answer:

Explanation:because electric current produces magnetic field around itself due to motion of electrons.