Most of us do not know how to connect a battery either in series or parallel. A series connection is done when a greater voltage is needed. A parallel connection is done when a greater capacity is needed. Batteries joined

## Eddy Current

We have seen that whenever the flux, linking with a closed electric circuit changes, an EMF has induced in the circuit and a current flow, the value of which depends on the emf around the circuit and the resistance of

## Difference Between Ground and Neutral

Ground or earth in a main (AC power) electrical wiring system is a conductor that exists primarily to help protect against faults and which in normal operation does not carry current. Neutral is a circuit conductor that may carry current

## Tellegen’s Theorem | Applications & Limitations

Tellegen’s Theorem This theorem states that algebraic sum of the power’s in any circuit (linear, non-linear, unidirectional, bi-directional, time-invariant and time-variant elements) at any instant is zero. It was published in 1952 by Bernard Tellegen. For verification of Tellegen’s theorem, KVL

## Millman’s Theorem | Limitations & Applications

Millman’s Theorem Case-1 The theorem states that if several ideal voltage sources V1, V2, V3,……., Vn in series with resistances R1, R2, R3,…….., Rn, are connected in parallel then the circuit may be replaced by a single voltage source Vout in

## Star to Delta Transformation/Y-Δ

In this article, we will see how to convert star configuration into delta configuration. This transformation permits three resistors which make a Y configuration to be replaced by three in a Δ configuration. The equivalent delta resistance between any two terminals is

## Delta to Star Transformation/Δ-Y

In this article, we will see how to convert delta configuration into star configuration. This transformation permits three resistors which make a Δ configuration to be replaced by three in a Y configuration. The resistance of each arm of the star

## Superposition Theorem | Applications & Limitations

Superposition Theorem Definition In any linear bi-directional circuit having more number of sources, the response in anyone of the elements is equal to an algebraic sum of the responses caused by individual sources while the rest of the sources are

## Invertibility & Inverse System

Invertible System The system is invertible if by observing the output, we can determine its input i.e. we can construct an inverse system that when cascaded with the given system, as shown in figure1, yields an output equal to the

## Time-Varying & Time-Invariant Systems

Time-Invariant System The system is time invariant if the behaviour and characteristic of the system are fixed over time. In other words, a system is said to be time invariant if a time shift in the input signal causes an identical