Vol. EE Reference
Chapter 1 Useful Equations And Conversion Factors

AC Circuit Equations

Inductive Reactance



Capacitive Reactance


capacitive reactance formula


Impedance in relation to R and X

ZL = R + jXL

ZC = R - jXC


Ohm’s Law for AC



Series and Parallel Impedances



NOTE: All impedances must be calculated in complex number form for these equations to work.





NOTE: This equation applies to a non-resistive LC circuit. In circuits containing resistance as well as inductance and capacitance, this equation applies only to series configurations and to parallel configurations where R is very small.


AC Power


AC power formula

AC power formula