Ohm's Law calculator

Enter 2 values of magnitude+phase angle to get the other values and press the Calculate button:

The voltage V in volts (V) is equal to the current I in amps (A) times the resistance R in ohms (Ω):

V_(V) = I_(A) × R_(Ω)

The power P in watts (W) is equal to the voltage V in volts (V) times the current I in amps (A):

P_(W) = V_(V) × I_(A)

AC Ohm's law formula

The voltage V in volts (V) is eqaul to the current I in amps (A) times the impedance Z in ohms (Ω):

V_(V) = I_(A) × Z_(Ω) = (|I|×|Z|) ∠ (θ_I + θ_Z)

The complex power S in volt-amps (VA) is equal to the voltage V in volts (V) times the current I in amps (A):

S_(VA) = V_(V) × I_(A) = (|V|×|I|) ∠ (θ_V - θ_I)