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  Useful Formula

Useful Formulae:

V = I x R
P = V x I = V2/R

Resistance:
RT = R1 + R2 + R3 ¡K¡K(Series)
1/RT = 1/R1 + 1/R2 + 1/R3 ¡K¡K(Parallel)

Capacitance:
1/CT = 1/C1 + 1/C2 + 1/C3 ¡K¡K(Series)
CT = C1 + C2 + C3 ¡K¡K(Parallel)
Q = it

Inductance:
LT = L1 + L2 + L3 ¡K¡K (Series)
1/LT = 1/L1 + 1/L2 + 1/L3 ¡K¡K(Parallel)

Circuit With Capacitor & Resistor:
E = iR + 1/C¡ìidt (Series)

Circuit With Resistor & Inductor:

E = iR + L x di/dt (Series)




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