VI Characteristics of Linear components in Electrical Circuits
The V-I characteristics of a circuit stand for the Voltage-Current characteristics of a circuit. The graph of current and voltage is drawn on the graph to show how one changes when a change in the other is done. The slope of this graph gives resistance, but only in the case when the slope is linear. Does that mean non-linear graphs of V-I characteristics are present too? YES. There are both linear and non-linear graphs. However, if non-linear graphs exist, ohms law would not have been valid. Ohms law exists and so does the non-linear graph.
- The reason behind this so-called contradiction is simple. Although Ohms law is applicable and true for a lot of materials, it is not applicable for some materials where the law of proportionality does not work. Let’s learn about each one of the graphs in detail,
Linear Components V-I Characteristics
Linear Components V-I characteristics are shown by ohmic resistors. Ohms law talks about the relation between voltage and current where it tells that the voltage and current are proportional to each other, therefore, if a graph is drawn, a straight line is obtained. The slope of the line gives resistance. Higher the slope, the higher will be the resistance. Hence,
R = [Tex]\frac{\Delta V}{\Delta I} [/Tex]and R = tanθ
The V-I characteristics give a straight line passing through the origin. In a resistance, if the voltage polarity is reversed, the current will start to flow opposite direction with equal magnitude if the magnitude of the voltage is not altered.
Linear Components – Electrical Circuits
In electrical circuits, some electronic devices follow a linear relationship between input and output, called Linear Components. These components follow the law of superposition principle and homogeneity. In this article, we will learn about the role of Linear components in Electrical Circuits, their properties, types, working, advantages, disadvantages, and applications of Linear components.
Table of Content
- What are Linear Components?
- Key Terminologies
- Properties of Linear Components
- Working of Linear Components
- Types of Linear Components in Electrical Circuits
- Difference between linear and non linear components