• A drawing of a flashlight, showing its parts and how it forms a continuous an electric current, or a continuous flow of electric charge.
• There are two types of currents: direct current and alternating current.
• In a direct current (DC) the charge flows only one way.
• In an alternating current (AC) the flow of the electric charge regularly reverses its direction.
• The flashlight shows that once the switch is activated the current flows from the negative terminals to the positive terminals.