AC Ohm's Law Calculator

What is AC Ohm's Law?

AC Ohm's Law is an extension of Ohm's Law applied to alternating current (AC) circuits. It describes the relationships between voltage, current, impedance, and power in AC systems.

The Formulas

The key formulas for AC Ohm's Law are:

• V = I × Z
• I = V / Z
• Z = V / I
• S = V × I (Apparent Power)
• P = S × PF (Real Power)

Where:

• V is voltage in volts (V)
• I is current in amperes (A)
• Z is impedance in ohms (Ω)
• S is apparent power in volt-amperes (VA)
• P is real power in watts (W)
• PF is power factor (dimensionless)