Quantity Usual Symbol UnitUnit Symbol
VoltageVVoltV
CurrentIAmpA
ChargeQColumnC
ResistanceROhmΩ
CapacitanceCFaradF
InductanceLHenryH
ReactanceXOhmΩ
ImpedanceZOhmΩ
PowerPWattW
EnergyEJouleJ
TimetSeconds
FrequencyfHertzHz