Quantity	Unit	Abbreviation	Units Derived From
charge	Coulomb	C
electrical potential	Volt	v	J / C
current	Ampere	A	C / sec
resistance	Ohm	Ω	v / A
energy	Joule	J	Kg ∙ m2 / sec2
power	Watt	W	J / C
capacitance	Farad	F	C2 / J
period	seconds	T
frequency	Hertz	Hz	cycles / sec