# Category: AC circuits

## What is a leading or lagging circuit?

In electrical circuits, the concepts of leading or lagging of current are fundamental to understanding the behavior of circuits, especially those involving alternating current (AC). In an AC circuit, the voltage and current waveforms...

## What is an ideal electrical power transformer?

An ideal electrical power transformer is a device designed to efficiently transfer electrical energy between two or more circuits through electromagnetic induction. In its ideal form, a transformer exhibits characteristics that maximize its performance...

## What is active power, reactive power and apparent power?

Electricity is an essential part of our daily lives, but understanding the different aspects of electrical power can be challenging. In this article, we’ll break down the concepts of apparent, active, and reactive power...

## Harmonics and its effects in AC power system

In AC (alternating current) circuits, harmonics are additional frequency components of the voltage or current waveform that are integer multiples of the fundamental frequency. For example, if the fundamental frequency of a circuit is...

## What is called phase imbalance in a 3 phase electrical system?

Phase imbalance in a three-phase electrical system refers to a situation where the phase-to-neutral voltages of the three phases are not equal. In a balanced three-phase system, the phase-to-neutral voltages of all three phases...

## Rectangular to Polar form & Polar to Rectangular form conversion

Phasor form conversion is the method of changing the representation form of a phasor. A Phasor is a rotating vector in a complex number form which expresses the magnitude and its phase. Sinusoidal signals...

## Inductive reactance formula derivation and calculation

Inductive reactance equation derivation Inductive reactance (XL) is a measure of the opposition to current flow in an inductive circuit. It is caused by the magnetic field that is generated around the conductor when...

## Capacitive reactance formula derivation and calculation

Capacitive reactance equation derivation Capacitive reactance (Xc) is a measure of the opposition to current flow in a capacitive circuit. It is caused by the electric field that is generated between the plates of...