Electronics and Communication Engineering - Exam Questions Papers - Discussion

Loop =number of branches - number of nodes +1.

* branch means individual circuit line (having capacitor or resister or inductor) in it.
* node means junction of three branches at a point is known as a node.

In the above-given figure there are 11 branches are there and 7 nodes are there so for we know the formula for "loop" Is L=B-n+1.
So, L=11-7+1,
L=4+1,
L=5.

Can someone please explain it in detail?

No of lines connected between 2 points or nodes having minimum of one element (r, l, c).

How the number of branches is 12, can anybody explain?

Planar graph that can be drawn without edges that intersects within a plane.

Non planar graph that cannot be drawn without edges that intersects within a plane.

Can anyone explain what is meant by planar and non planar graph?

This answer explanation is good and also say some different concept.

Node:

A point or junction where two or more circuit's elements (resistor, capacitor, inductor etc) meet is called Node.

Branch:

That part or section of circuit which locate between two junctions is called branch. In branch, one or more elements can be connected and they have two terminals.

Loop:

A closed path in circuit where more than two meshes can be occurred is called loop i.e. there may be many meshes in a loop, but a mesh does not contain on one loop.

Mesh:

A closed loop which contains no other loop within it or a path which does not contain on other paths is called Mesh.

I don't know which is node and branches so explain thus concept.

Explain please.