http://www.ck12.org Chapter 16. Electric Circuits Advanced Topics Version 2
16.2 Key Equations
E=−∆L∆tI Emf across an inductor with inductance L
L=μ^0 N(^2) A
I Inductance of a solenoid withNturns, areaA, in Henrys (H)
XL= 2 πf C Inductive reactance for AC of frequency f
XC=X^1 L Capacitive reactance for AC of frequency f
Z=
√
R^2 +(XL−XC)^2 Impedance of an RC circuit (Pythagorean Theorem)
tanφ=XL−RXC Phase angle between peak current and voltage