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ELECTRICAL PARAMETERS

REACTANCE

RESISTANCE

IMPEDANCE

Not depend on frequency

Depend on frequency

Does not cause a phase shift

Causes a 90 degree phase

shift between voltage and current.

Causes the loss of power

Ideal reactance returns all energy that it stores in its field

Capacitance

Inductance

Get with capacitor

Get with inductor

Impedes current

at low frequencies

Impedes current

at high frequencies

Capacitors store energy in the electric field between their plates

Inductors store energy in the magnetic field around the wire

The measure of capacitance is the Farad

The measure of inductance is the “henry”

Get with a resistor

A larger inductance offers more impedance to current flow

Z = R + jX

R = Resistance

X=Reactance

The

imaginary operator means a 90 degree phase shift

XL =j L ωL=j2πL

Xc= 1/ jωC =1/j2πfC