What is electric current?

Electric current is the flow of electrons through a conductor. It happens when there is a difference in electric potential (voltage) between two points.

The unit of current is the ampere (A).

What is voltage?

Voltage is the force that pushes electrons through a conductor. It is measured in volts (V).

You can think of voltage like pressure that makes water move in a pipe.

What is resistance?

Resistance is the opposition to the flow of electric current. It depends on the material, length, and thickness of the conductor.

It is measured in ohms (Ω).