Electrical Circuits Part (2) : dc circuits Lecture 2

Electrical Circuits

Part (2) : DC Circuits

Lecture 2

By: Nozimjon Xamdamov

Branch

A branch is any portion of a circuit with two terminals connected to it. A branch may consist of one or more circuit elements. In practice, any circuit element with two terminals connected to it is a branch.

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Junction Rule

The total current flowing INTO a junction of two or more

wires is the SAME as the total current flowing OUT

of the junction.

5A

10A

?

5A

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Node

A node is the junction of two or more branches (one often refers to the junction of only two branches as a trivial node). illustrates the concept. In effect, any connection that can be accomplished by soldering various terminals together is a node. It is very important to identify nodes properly in the analysis of electrical networks.

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