Ampere (A)- unit of electrical current; 1 A equals a flow of 1 coulomb per second.

Coulomb (C)- unit of electrical charge; 1 C equals thge charge caused by the flow of 1 A for one second.

Joule (J)- SI unit of energy equal to one newton-meter.

Ohm (omega)- a unit of electrical resistance; 1 ohm is equal to the resistance that permits a current of 1 A to flow when 1 V is applied across the resistance.

Volt (V)- unit of potential difference.

Watt (W)- unit of power; 1 W equals 1 J per second.
 

Source:
Zitzewitz, Paul W., Neff, Robert F., and Mark Davids. Physics: Prinicipals and Problems. New York: Glencoe, 1995.