Symbol and Units Flashcards
V
potential difference measured in Volts (V)
I
current measured in Amps (A)
R
resistance measured in Ohms
Q
charge measured in Coulombs (C)
E
energy measured in Joules (J)
t
time measured in seconds (s)
P
power measured in Watts (W)
E = Q x V
energy = charge x potential difference
joules = coulombs x volts
V = E/Q
potential difference = energy/charge
volts = joules/coulombs
V = I x R
potential difference = current x resistance
volts = amps x ohms
I = Q/t
current = charge/time
amps = coulombs/seconds
Q = I x t
charge = current x time
coulombs = amps x seconds
R = V/I
resistance = potential difference/current
ohms = volts/amps
P = E/t
power = energy/time
watts = joules/seconds
P = I x V
power = current x potential difference
watts = amps x volts