ACTIVE AND PASSIVE ELEMENTS

Active elements:

The elements which delivers a net amount of power are known as Active elements.
They are also defined as the elements with a -ve slope.
For example:Voltage sources and Current Sources.

Passive elements:

The elements which absorbs or dissipates a net amount of power are known as Passive elements.
They are also defined as the elements with a +ve slope
For example:Resistor,Inductor and Capacitor(provided R,L,C >or =0)

Shortly all the elements which lies in the 1st and 3rd quadrants are Passive and all the elements which lie in the 2nd and 4th quadrant are Active.

Here the Voltage source V(s) is Active as it delivers a net amount of power and the Resistance R is Passive as it Absorbs or dissipates a net amount of power.

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