Ohm's law formula
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 equal to the current I in amps (A) times the impedance Z in ohms (Ω):
V(V) = I(A) × Z(Ω) = (|I|×|Z|) ∠ (θI + θZ)
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|) ∠ (θV - θI)
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