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Definition. A linear circuit is an electrical circuit that follows the principle of superposition, where the output is directly proportional to the input. In such circuits, the relationships between voltage and current remain constant, regardless of the level of signals applied.
Linear circuits are electrical circuits that adhere to the principle of superposition, meaning the output response is directly proportional to the input. This linearity allows for predictable behavior when analyzing and designing circuits, making calculations easier using techniques like mesh analysis and nodal analysis.
Definition. Linear circuits are electrical circuits that follow the principle of superposition, where the output is directly proportional to the input. This means that they obey Ohm's Law and can be analyzed using linear equations, making them simpler to solve and understand.
Reason 1: In electrical engineering, the behavior of most of our fundamental circuit elements are described by linear operators—linear operations are prevalent in circuit analysis! Reason 2: To our great relief, the two characteristics of linear operators allow us to perform these mathematical operations with relative ease!
Linear Circuits Analysis. Superposition, Thevenin /Norton Equivalent circuits. So far we have explored time-independent (resistive) elements that are also linear. A time-independent elements is one for which we can plot an i/v curve. The current is only a function of the voltage, it does not depend on the rate of change of the voltage.
Linear Circuits. Circuits consisting solely of components with constitutive relations that pass through the origin of i-vcurves and that are straight lines1, are considered to be “linear” circuits. For example, consider a voltage divider as sketched below.
Linear circuits are composed of linear elements or linear independent sources, and they satisfy homogeneity and additivity properties. This principle can help in circuit modeling to predict the source current when the voltage drop across the load changes.
