what is voltage or volts
Electricity with 210+ answers. Voltage is like the pressure in a garden hose with a hand operated spray nozzle at the end. Even when the nozzle is turned off there's still pressure in the garden hose. Even when a light is switched off there's still voltage in the energized portion of the circuit. Current is like the rate of flow of water in the garden hose, say how many gallons per minute are moving in the hose.