The particle that flow inside when the current flows

When an electric current flows, the particles that move are called electrons. Here's a step-by-step explanation:

1. An electric current is created when a voltage difference (or electric potential difference) is applied across the ends of a conductor. This voltage difference is provided by a power source such as a battery or a generator.

2. The voltage difference creates an electric field within the conductor.

3. The electric field exerts a force on the free electrons present in the conductor.

4. This force causes the electrons to move in the direction opposite to the electric field.

5. The flow of these electrons constitutes the electric current.

So, in essence, it is the electrons that flow inside a conductor when an electric current flows.