What causes the magnetic field around the wire? Magnetic field
O A. An electric current
O B. An electric field
PREVIOUS

A. An electric current

Explanation:

took the test here's proof

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.