The only way to restore the flow is by getting the pump to pump harder, and force water through the restriction, i.e. Going back to the water analogy, when you stand on a hose, you increase the resistance and restrict the flow.

For a fixed voltage applied to a load, the higher the resistance, the lower the current. Resistance is like a restriction to the flow of electrons and electricity is dissipated as heat energy in a resistance. Similarly a 500 watt device uses a kilowatt hour of electricity in 2 hours.Įvery electrical device or load has resistance. A 1 kilowatt (1000 watt) appliance uses a kilowatt hour of electricity in one hour. KWh are sometimes called units and are what you pay for on your electricity bill. Low powers are measured in milliwatts (mW) or thousandths of an amp. A kilowatt is 1000 watts, also abbreviated to kW. Power is the rate at which energy is consumed by a load and is measured in watts. It could be a motor, bulb, heater, LED, or an electronic resistor. This is the device connected to a voltage source. The water analogy is water flow rate in gallons per minute. High current means lots of electrons flowing through the circuit. The higher the voltage applied to a circuit, the greater the current which will be forced through it.Īn electric current is due to the movement of electrons through a conductor and load and is measured in amps. Similarly a voltage source is like a pump and pushes electrons around the circuit. The greater the pressure and the force which the pump exerts, the greater will be the flow of water through the pipe. Voltage is the pressure in a circuit and measured in volts. Like any discipline, electrical engineering has jargon or specialized terminology. What's the Difference Between Watts, Amps and Volts?

3000 watts to amps