Kirchhoff’s Current Law (KCL) Explained

Kirchhoff’s Current Law (KCL) is also known as Kirchhoff’s first law or Kirchhoff’s junction law. Statement : “Algebraic sum of branch currents at node is zero at all instance of time.” Or “At any node (junction) in a network, the sum of currents flowing into that node is equal to the sum of currents flowing … Read moreKirchhoff’s Current Law (KCL) Explained

Kirchhoff’s Voltage Law (KVL) Explained

Krichhoff’s Voltage Law (KVL) Kirchhoff’s Voltage Law (KVL) and Kirchhoff’s Current Law (KCL) are very fundamental laws in the electrical circuit. Using these laws, we can find the voltage and current in the electrical circuit. Statement: The algebraic sum of all the branch voltages around any closed loop in the network or circuit is zero … Read moreKirchhoff’s Voltage Law (KVL) Explained

Resistors in Series and Parallel

In this tutorial, it has been explained that when the bunch of Resistors is connected either in a Series or Parallel then how to find the equivalent resistance. Resistors in Series As shown above, when the n- resistors are connected in series connection, then the total resistance will be the summation of individual resistance. Proof … Read moreResistors in Series and Parallel

Loop, Mesh, Node and Branch Explained

What is Branch?

A branch represents the single circuit elements like resistor, capacitor, inductor, voltage, or current source.

                                                                  Figure. 1

For example, for the circuit shown in figure 1, there are five branches. A 10 V voltage source, 2A current source, 4 Ω, 5 Ω, and 3 Ω resistors.

What is Node?

A node is a point in the circuit where two or more circuit elements (or branches) are connected.                               Figure. 2 ( Representation of Four Nodes in the Circuit)

For example, as shown in Figure 2, the above circuit contains the Four nodes. The node A, B, C, and D.

What is Loop?

Any closed path in the circuit is called as a loop.

A loop is a closed path formed by starting at a node, passing through a
set of nodes, and returning to the starting node without passing through
any node more than once.

Figure. 3 (Representation of Loop in the Circuit)

For example, as shown in Figure.3, the circuit contains three loops.

The first is loop A-B-D-A, the second loop is B-C-D-B. And the third loop is A-B-C-D-A.

What is Mesh?

A mesh is a closed path in the circuit, which does not contain any other close path inside it.

For example, as shown in Figure.3, loop 1(A-B-D-A) and loop 2 (B-C-D-B) does not contain any other closed path within them. And they are the example of the Mesh. While loop 3 (A-B-C-D-A) contains loop 1 and loop 2 within it. So, it can’t be called as a Mesh.

Note: All  Mesh are loops but not all the loops are Mesh.

For more information, check this video:

The Concept of Loop, Mesh, Node and Branch

Read moreLoop, Mesh, Node and Branch Explained