Electric circuits definitions

Term

Description

Standard unit Definition

energy

-

Joules or Btus

1 Btu = 1055 Joules

coulomb

number of electrons

-

1 coulomb = 6.022 x 1023 electrons

current

flow rate of electricity

ampere

1 A = 1 coulomb / second

volts

"pressure" of electricity

volt

1 V = 1 Joule / coulomb

resistance

obstruction of current

ohm

1 W = 1 volt / 1 ampere

capacitance

"pressurized storage" of electricity

farad

1 F = 1 coulomb / volt

power

rate of energy

watt

1 W = 1 Joule / second