# Fundamental Physics/Electronics/Impedance

## Impedance

Impedance is defined as resistance of the conductor to the flow of AC current . Impedance is denoted as Z and calculated as the sum of its resistance and its reactance

${\displaystyle Z=R+X}$

## Impdedance of conductors

### Resistor

Resistor's Impedance

${\displaystyle Z=R+X_{R}=R}$

Resistor's Reactance

${\displaystyle X_{R}=0}$

### Capacitor

Capacitor's Impedance

${\displaystyle Z_{C}=R_{C}+X_{C}}$

Capacitor's Reactance

${\displaystyle X_{C}={\frac {V_{C}}{I_{C}}}}$

### Inductor

Inductor's Impedance

${\displaystyle Z_{L}=R_{L}+X_{L}}$

Inductor's Reactance

${\displaystyle X_{L}={\frac {V_{L}}{I_{L}}}}$