The electric current in a copper wire is normally composed of
A)electrons.
B)protons.
C)ions.
D)all of the above

Question

Quizplus · Accepted Answer

Electric current in a conductor, such as copper wire, involves the flow of negatively charged particles called electrons. Protons are positively charged particles and are not involved in electric current. Ions are atoms or molecules that have a net electric charge and may be present in some materials, but in a copper wire, there are primarily only electrons that contribute to the flow of electric current.

The Electric Current in a Copper Wire Is Normally Composed