Question

How does potential difference cause an electric
current to flow through a metallic conductor?
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Answer 1

charge contains electrons which need to travel from one point from another in a metallic wire.

electrons only move if there is a difference of electric pressure

which is known as potential difference.

The electric pressure sets the electrons in motion so they constitute electric charge in a metallic wire.

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Answer 2

Answer:

Flow of electrons

Explanation:

When a potential difference is applied between two terms of a metal conductor it causes an electric field to act upon the free electrons causing them to move from lower potential to higher potential thus causing flow of electricity