Gemini: Think of electricity like water flowing through a hose pipe: Volt is the pressure, Ampere is the volume of flow, and Watt is the total power delivered.
Volt (V) — Electrical Pressure
- What it is: The force pushing electrical charges through a circuit.
- Water analogy: The water pressure in the pipe. High voltage means the electricity is being pushed with high force.
- Example: Standard European wall sockets supply 230V, whereas AA batteries deliver just 1.5V.
Ampere (A) — Electrical Current
- What it is: The measure of how many electric charges flow past a point per second.
- Water analogy: The thickness of the water stream (flow rate). A thick pipe carries more current than a thin hose.
- Example: A smartphone charger pulls around 1A to 3A, while an electric oven can pull 16A or more.
Watt (W) — Total Power Output
- What it is: The rate at which electrical energy is used or produced. It is calculated by multiplying pressure by flow: Watts = Volts × Amps.
- Water analogy: The total amount of energy coming out of the hose. High pressure (Volts) combined with high flow (Amps) turns a water wheel rapidly.
- Example: A modern LED light bulb uses about 9W, whereas a kettle uses around 2,000W (2 kW) to heat water quickly.