Electrical Charge

Electricity is the movement of electrons. Electrons create charge that is used to do work such as operating a radio or lighting a lightbulb. An electric circuit is a closed loop that allows charge to move from one place to another. There are components that control this charge and use it to do work.

Terms to understand:

• Voltage is the difference in charge between two points.

• Current is the rate at which charge is flowing.

• Resistance is a material's tendency to resist the flow of charge (current).