Current Electricity

Current is defined as the rate at which electrons flow through a closed circuit. The SI unit of current is Ampere. A direct current is a type of current that flows in the same direction, whereas the alternating current is a type of current that changes its direction and magnitude at fixed intervals of time. […]

The electricity that powers your home television set or static electricity caused by a woollen sweater you are wearing all work on a similar principle i.e. potential of the charge it can carry. Thus, the study of electricity and electric currents must consist of the study of various materials and their respective properties. Various materials

Most electrical circuits are complicated and applying simple ohm’s law and series/parallel mixture simplification approaches to find the unknown variables in such circuits is not practical. As a result, Kirchhoff’s laws are applicable to simplify these circuits.  The rules are the fundamental analytic tools for finding the voltages and currents in an AC or DC

Electric circuit resistance is analogous to gravity. You will soar out if there were no gravity. And you can’t leap if there’s too much of it. A short circuit occurs when there is low resistance to current flow. The current flow will be unaffected. Any current flow is impeded by excessive resistance. Many students do

Introduction ‘Internal resistance of a cell’ basically means the resistivity inside a cell. In electricity, we know that current flows in a circuit in a steady manner. To maintain the current in a steady manner, the electrolytic cell is required. There are two types of resistance: internal resistance and external resistance.  Before understanding these terms,

The internal resistance (also called the ohmic resistance) of a Thévenin voltage source (or other electrical-engineering equivalent circuits) is equivalent to a resistor R placed in series with the positive terminal of the voltage source and connected to the ground(0 volt). Internal resistance is crucial in practical electrical power systems. It is often an essential

A material that does not conduct electrical current is known as an insulator. Paper, plastic, rubber, glass, and air are all good insulators. Although a vacuum is an insulator, it is not material. Magnet wire is coated with a very thin layer of insulation to allow for more turns or larger wire in the winding

Electromagnetic fields (EMF) exist in the world around us, from electricity in power lines to microwave ovens, and are a part of modern life. They are also the subject of much scientific interest, as they may affect physical matter. For example, EMF may alter the Hansonian virus used as part of the intercellular transport system

A generator is commonly responsible for producing power or electric current. These generators are like power plants. They employ the same mechanism as an electric power plant to generate the current. The physical mechanism behind the working of generators is that they convert mechanical energy into electrical energy for supplying electric current to the premises.

Impedance definition: A circuit’s resistance and reactance combine to present opposition to alternating current. Impedance, denoted by the letter ‘Z’, is a measurement of resistance (R) to the electrical flow. Impedance is an important concept in the study of electronics, and it is derived from the study of AC analysis. The resistance is measured in