Voltage is the measure of electrical potential difference [the difference in electric charge] between two points in a circuit. It represents the force that pushes electric charges [particles that carry electricity] to move from one point to another. Voltage is measured in volts (V).
- When you plug in a lamp into an electrical outlet, the voltage provided by the outlet creates an electrical current in the circuit, and enables the lamp to light up.
- The battery in a mobile phone provides a certain voltage, allowing the phone to function and charge.
- A power supply unit in a computer provides different voltages, such as 5V or 12V, to power various components.
Very Simple Definition:
Voltage is the force that makes electricity flow.
- When you turn on a light switch, the voltage from the electrical wires allows the light bulb to turn on.
- When you charge your phone by connecting it to a charger, the voltage from the charger fills up the phone’s battery.