## Source Transformation

Source Transformation simply means replacing one source by an equivalent source. A practical voltage source can be transformed into an equivalent practical current source and similarly a practical current source into voltage source. Any practical voltage source or simply a voltage source consists of an ideal voltage source in series with an internal resistance or …

## Kirchhoff’s Current Law and Kirchhoff’s Voltage Law

Kirchhoff’s Law: A German physicist Gustav Kirchhoff developed two laws enabling easy analysis of interconnection of any number of circuit elements. The first law deals with the flow of current and is popularly known as Kirchhoff’s Current Law (KCL) while the second one deals with the voltage drop in a closed network and is known …

## Current Division and Voltage Division Rule

Current Division Rule A parallel circuit acts as a current divider as the current divides in all the branches in a parallel circuit, and the voltage remains the same across them. The current division rule determines the current across the circuit impedance. The current division is explained with the help of the circuit shown below: …

## Capacitance

Capacitance is defined as the capability of an element to store electric charge. A capacitor store electric energy in the form of the electric field by the two electrodes of a capacitor, one as positive and other as negative. In other words, capacitance is a measure of charge per unit voltage that can be stored …

## Inductance

The Inductance is the property of a material by virtue of which it opposes any change of magnitude and direction of electric current passing through the conductor. In other words, it is the property of the coil in which the emf is induced because of the variation of flux. The inductance is added in the …

## Resonant Frequency

The resonant frequency condition arises in the series circuit when the inductive reactance is equal to the capacitive reactance. If the supply frequency is changed the value of XL = 2πfL and XC = 1/2πfC is also changed. When the frequency increases, the value of XL increases, whereas the value of XC decreases. Similarly, when …

## Resistance

Resistance is the property of a material by virtue of which it opposes the flow of electrons through the material. It restricts the flow of the electron through the material. It is denoted by (R) and is measured in ohms (Ω). When the voltage is applied across the resistor the free electrons start accelerating. These …

## Series Resonance

In the RLC series circuit, when the circuit current is in phase with the applied voltage, the circuit is said to be in Series Resonance. The resonance condition arises in the series RLC circuit when the inductive reactance is equal to the capacitive reactance. XL = XC or (XL – XC = 0) A series …

## RLC Series Circuit

When a pure resistance of R ohms, a pure inductance of L Henry and a pure capacitance of C farads are connected together in series combination with each other then RLC Series Circuit is formed. As all the three elements are connected in series so, the current flowing through each element of the circuit will …

## RC Series Circuit

A circuit that contains pure resistance R ohms connected in series with a pure capacitor of capacitance C farads is known as RC Series Circuit. A sinusoidal voltage is applied and current I flows through the resistance (R) and the capacitance (C) of the circuit. The RC Series circuit is shown in the figure below: …