Electric current: Ohm’s law, resistivity

Power generators are the most prevalent type of machine used to generate electricity for most urban power networks. They are all around us, and their significance cannot be overstated or understated. Power generators are one of the most important tools in today’s world of technology. Machines like these transform mechanical energy into electrical energy, which […]

Since electrical circuits are so complex, it’s impossible to discover the unknown variables using simple Ohm’s rule or series/parallel combination simplification. These circuits are simplified using Kirchhoff’s rules. An electric circuit’s voltages and currents can be determined using such law, whether AC or DC. These principles are extremely helpful in determining the parameters of electrical

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