Electronic Info

Electronic Power

P = Power in Watts
V = Electrical potential, Volts
I = Current, Amperes
R = Resistance, Ohms

Ohms Law: V = IR
Example: V=120V and R=8 Ohms
     I = V/R, I = 120V/8 Ohms
     I = 15A (circuit requires 15A)

P = I^2 R
Example: P=15A^2 * 8 Ohms
     = 1800W

P = VI
Example: P = (120V)(15A) = 1800W

Energy usage (power x time)
   P = (600W)(1 kW/1000W)
      = 0.6 kW
Energy in kWh:
   E = (0.6kW)(10h)
       = 6 kWh