1. Electric network:- A combination of various electric element connected in any manner is called electric network.
2. Electric Circuit:- A electric circuit is a closed conducting path through which an electric current either flows or intended to flow.
3. Parameters:- The various element in electric circuit are called its parameters such as resistor, inductor capacitors.
4. Linear Circuit :- An electric circuit that contains parameters of constant value , thats their value did not changed with the voltage and current known Linear circuit.
5. Non Linear Circuit :- An electric circuit that contains parameter whose value changed with voltage or current known Non Linear Circuit.
6. Bilateral Circuit:- An electric circuit that possesses the same properties of characteristics in either direction called bilateral circuit. A transmission line is bilateral because it can be made to perform both side equally well in either direction.
7. Unilateral circuit :- An electric circuit that whose properties or characteristics changed with the direction of flow of electric charge called unilateral circuit a diode rectifier circuit is unilateral circuit .
8. Unilateral Element:- An element which conduct in any one direction called unilateral Element e.g.semiconductor diode.
9. Bilateral Element:- An element which conduct in both direction similarly called bilateral element e.g. resistor , diac, triac.
10. Active Network:- An electric network that contains one or more source of emf called active network.
11. Passive Network:- An electric Network that does not contain any source of emf called passive network.
12. Node :- A node is a point in the network where two or more circuit element are joined .
13. Junction:- A junction is a point in the network where there or more circuit element are joined in fact it is a point where current is divided.
14. Branch :- The part of a network that is lies between two junction point is called branch .
15. Loop:- The closed path of the network is called loop.
16. Mesh:- The most elementary from of a loop that can not further divided is called Mesh .
