Circuit element
A circuit element is any individual circuit component which gets connected to the other components in a network.
Resistors, capacitors, voltage sources etc. are the examples of circuit elements.
Open circuit
Two points in a circuit are said to be open circuited if there is no circuit element or direct connection between them.
An open circuit exists between points A and B in above Figure.
Short circuit
Two points in a circuit are said to be short circuited when they are connected to each other by a good conducting wire.
Points A and B are short circuited in above Figure.
Branch
A branch of a network is defined as the group of elements connected in series or parallel and which has two terminals from connections. In figure below the branches are : AB, BC, CD, BE, EF, AF.
Mesh or Loop
A mesh or loop is a set of branches, forming a closed path in a network. For example in figure above the closed path A-B-E-F-A forms Loop-I or the closed path B-C-D-E-B forms Loop-II.
Node or junction
It is common point in a network at which two or more branches meet. In figure above, the points A, B, C, E, F are nodes.
Analysis of a circuit:
- The DC circuits contain batteries and resistors.
- Obtaining the voltage, current, and power associated with each circuit element is called as the circuit analysis.
- The analysis of circuits first requires simplification of the given circuit.
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