What is Electric Charge? The physical property of a substance that causes charged substance to experience a force when placed in an electromagnetic field is called electric charge. In other words, electric charge is the physical property of the subatomic particles of matter due to which matter shows electrical behavior. Electric charge is represented by the symbol Q (or q, ). Electric charge is a conserved property, which means the net charge of a closed remains constant. Electric charge can be of two types namely positive charge and negative charge. The positive charge is the charge carried by protons, while ... Read More

The slow movement of something toward an object is termed as drift. The average velocity of electrically charged particles in a material under the influence of an electric field is called the drift velocity. In this article, we will learn in detail about drift velocity, carrier mobility, and drift current. What is Drift Velocity? When a voltage is applied across the ends of a conducting wire, an electric field is applied at every point of the copper wire. Due to this electric field, the free electrons in the conductor wire experience a force that accelerates them toward the positive end ... Read More

Electric circuits are classified into two main types namely series circuit and parallel circuit based on the arrangement of components in the circuit. A series circuit is one in which the components are chain connected, while a parallel circuit is one in which all the circuit components are connected between two common points. Series circuits and parallel circuits act as voltage divider circuits and current divider circuits, respectively. Read through this article to find out more about Current Division Rule and Voltage Division Rule. Current Division Rule A parallel circuit acts as a current divider as it divides the total ... Read More

In this article, we shall discuss electrical conductance and conductivity, its definition, formula, unit of measurement, and the solved numerical examples. What is Electrical Conductance? The measure of how easily the electric charge (or electrons or electric current) can flow through a material is called the conductance or electrical conductance of that material. Therefore, electrical conductance defines the capability of a substance to conduct electricity. In order to understand the concept of electrical conductance, we have to recall the electrical resistance of materials. Electrical resistance is defined as the measure of difficulty that a material offers in the flow of ... Read More

The branch of engineering that deals with the study of design and implementation of various electrical devices and systems used in our everyday life as well as generation, transmission and distribution of electrical power is popularly known as Electrical Engineering. Electrical engineering primarily convers the study of electric circuits, power systems, electrical machines, power electronics, control system, and many more. Electrical engineering uses formulae and mathematical equations to explain and prove the truth of concepts. These formulae and equations are very useful in understanding the behavior of electrical systems and helps to perform the different calculations in practice. This article ... Read More

In electrical and electronic circuits, the power is one of the most significant quantities used to analyze the circuits for practical applications. The electrical power defined as the time rate of expanding or absorbing energy in a circuit, i.e., $$\mathrm{Power, P=\frac{Energy \;expanded\; or\; absorbed (𝑊)}{Time(𝑡)}}.....(1)$$ This article is meant for explaining power relations in AC circuits. Where, an AC circuit is one which is excited from a source alternating voltage. Instantaneous Power in an AC Circuit The value of electric power in an AC circuit measured at a certain instant of time is known as instantaneous power. It is generally ... Read More

The energy of flowing wind is a versatile source of renewable and sustainable energy. In practice, people use the terms Windmill and Wind Turbine interchangeably, but these two terms are different from each other. Windmill and wind turbines are different from each other in structure and application. Windmill is a technology in which energy of wind is used to mill grains, moving water, driving machines, etc. On the other hand, a wind turbine converts the wind energy into electrical energy by driving a generator connected to it. In this article, we will discuss all the noticeable differences ... Read More

While analyzing electric circuits, we come across the electrical quantities "voltage drop" and "potential difference" that appear to be the same at first sight because both are measured in Volts. In this article, we will highlight how Voltage Drop is different from Potential Difference in many aspects. Before discussing the differences between Voltage Drop and Potential Difference, let's start with some basics so that it becomes easy to understand the differences between them. What is Voltage Drop? When an electric current flows through a circuit and there is a drop or decrease in the electric potential of the charge ... Read More

In atomic structure, valance band and conduction band are the terms used to represent the energy levels of the subatomic particles, usually electrons. While analyzing the atomic structures, we found that the valance band and conduction band are separated by a certain amount of energy depending on the type of material. For example, in metals, these are touching each other; in semi-conductors, these are separated by a moderate amount of energy; and in case of insulators, this separation is very large. The energy gap between the valance band and the conduction band is known as forbidden energy gap. The diagram ... Read More

In electrical and electronics engineering, transformers and amplifiers play a crucial role in several circuits. At first sight, the function of a transformer and an amplifier may seem similar, that is, increasing the level of voltage. But, a transformer can reduce the level of voltage as well, whereas an amplifier cannot. In this article, we will discuss all the key differences between a transformer and an amplifier by considering different parameters such as basic definition, circuit components, primary function, applications, etc. But before that, let's check some of the basics of transformers and amplifiers so that it becomes easier ... Read More