| Useful Formulae: V = I x RP = V x I = V2/R
 Resistance: RT = R1 + R2 + R3 ……(Series)
 1/RT = 1/R1 + 1/R2 + 1/R3 ……(Parallel)
 Capacitance: 1/CT = 1/C1 + 1/C2 + 1/C3 ……(Series)
 CT = C1 + C2 + C3 ……(Parallel)
 Q = it
 Inductance: LT = L1 + L2 + L3 …… (Series)
 1/LT = 1/L1 + 1/L2 + 1/L3 ……(Parallel)
 Circuit With Capacitor & Resistor: E = iR + 1/C∫idt (Series)
 Circuit With Resistor & Inductor:E = iR + L x di/dt (Series) |