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Electricity basics. Some basic definitions, equations and analogies of electricity.
|Voltage||V||volt (V)||Pressure (Potential) difference due to charge difference||Head: Pressure (Potential) difference due to height difference|
|Current||I||amp (A)||Flow of charge in charge/time or coulombs/sec||Flow: Flow of water in volume per time such as liters/sec|
|Resistance||R||ohm (Ω)||Opposition to the flow of charge||Friction: Opposition to the flow of water|
|Power||P||watt (W)||Energy/Time = Power=Current*Voltage||Power: Power=Current*Pressure|
|Energy||E||watt-hour (Wh)||The ability to do work||Energy: The ability to do work|