Passive and active devices

Active device....
How we can define it in electronics?..
Else you try Passive device....

Now i show my concept about passive components.
A passive components, depending on field, may be either a component that consumes energy, but not produse energy, or a component that incapable of power gain.
Then what is about active component?
A component that is not passive is called active component.
Hum...........
Just leave it.
The circuit that consist only some passive component is called passive circuit.
Also active circuit?....
But in electronics, almost circuit contain active and passive component.

I list out some component below.
Just say active or passive?....
  • Capaciter
  • Transistor
  • Resistor
  • Relay
  • Inductor
  • Diode
  • Glow tubes
  • Energy source
  • Transformers
  • vacuum tubes
Try.........You can.....