Which particles constitute the electric current in a metallic conductor?

What constitutes an electric current?

Name the particle responsible for flow of electric current in a metallic conductor.

The flow of the electric current through a metallic conductor is

The flow of the electric current through a metallic conductor is

Explain the cause of electric current in a conductor.

Answer the following question in one sentence What constitutes an electric current in a metal?

Define electric wrrent. Name the particln that constitute electric current flowing through the metallic wires.