# Practical Electronics/Simplest Circuits

## R.L,C Components

Below is the summary of the three components R , L , and C

Components Symbol Voltage V Current I Reactance X Impedance Z
Resistor R V = IR I = $\frac{V}{R}$ 0 Z = R
Capacitor C V = $\frac{1}{C} \int I dt$ I = $C \frac{dV}{dt}$ X = $\frac{1}{\omega C}/_-90 =$$\frac{1}{j \omega C}$ = $\frac{1}{sC}$ $Z = R + X = R + \frac{1}{j\omega C}$
Inductor L V = L $\frac{dI}{dt}$ I = $\frac{1}{L} \int V dt$ X = ωL/_90 = jωL = sL $Z = R + X = R + j\omega L$

## Series Circuit

With three components R, L, C, connected in series we have the following circuits

## Parallel Circuit

With three components R, L, C, connected in parallel we have the following circuits