Electric current: Ohm’s law, resistivity

Introduction: Drift Velocity has its influence on various topics in physics. This topic covers all the phases which find the difference with the properties of the Drift Velocity. The study further enhances the functioning of the electrons for the change in the electric charges. The types of velocity that it forms and its benefit in […]

Current is known as the flow of electrons or charges through a conducting body. We measure current with a device called an ammeter. Its SI unit is the ampere, denoted by ‘A’. In an alternating current, the motion of electric charge involves a change in direction periodically. In a direct current, the motion of the

Electricity can be dangerous if you are unaware of what you’re doing, but it can be a handy and powerful tool to have in your toolbox if you understand the concepts behind it. Understanding how electrical resistance works is the first step in understanding how circuits work. Once you know circuits, you’ll understand how almost

The obstacle that the voltage faces while driving a current through a conductor is called resistance, whereas reactance is the resistance to a variable current. Resistance is affected by the temperature of the conductor; reactance is affected by the frequency of the alternating current flowing through an inductor or capacitor. Resistance exists on both direct

Overall, there are two types of electric currents- Alternating current (AC) and Direct current(DC). In AC, the current moves back and forth at regular intervals; the current changes direction approximately 50-60 times per second. In DC, the direction of the flowing current is the same throughout the circuit, and the electrons move from the negative

A battery is a component in the electrical circuit that transforms energy from a non-electrical form. It converts chemical reactions into electrical energy. The circuit is completed when the electrons travel through wires from the terminals of a battery to the device. EMF is a measure of an electric current’s electromotive force (a measure of

We can resolve simple electrical circuits by applying Ohm’s Law, that is, V = IR For the circuits that are not too complicated, we resolve it by using the principle of conservation of energy or the definition of Potential differences/Voltage between two points in a circuit. We calculate the resistance and potential difference using Ohm’s

In physics, we have to study the electrical mechanism in theory and practical work. Resistance and conductivity are physical quantities used in electrical mechanics and especially in quantum mechanics.  The article introduces the concepts of resistivity and conductivity. It will describe the property of resistivity and further exemplify its causes with reality for current and

In our daily lives, we use electrical and electronic devices immensely. What powers or drives these devices are the electrical circuits. Electrical circuits are complicated. We have to send the exact current in various branches or the precise value of potential difference across the different components for the proper functioning of the devices. For solving

When we start learning about direct current transformers, we must first understand what is meant by the transformer. A transformer can be a static machine that will work on the principle of mutual induction. These transformers work on the principles of Faraday’s law of electromagnetism, which states that the rate of change in the given