Conductor Have you ever seen electric wires around you? They carry electricity from one place to another. But have you ever wondered how electricity flows through them so easily? The reason is electrical conductors. A conductor is a material that allows electricity to pass through it easily because it has lots of free electrons. These … Read more
Electricity Electricity is the movement of tiny particles called electrons from one place to another. This movement is also known as the flow of electric charge. Just like water flows through a pipe, electricity flows through wires or other materials. The speed and ease of this flow depend on the kind of material the electrons … Read more
Electric Current Electric current is the flow of tiny particles called electrons. Just like water flows through a pipe, electrons flow through wires. This flow is what we call electric current. We show electric current with the letter I, and its unit is called an ampere (A). You can think of it like measuring how … Read more
Caliper A caliper tool is a special tool used to measure things. It helps us find out the exact size of an object, like how long, wide, thick, or round it is. This tool is very useful when we need to be very accurate with measurements. Calipers are usually made of strong metals like high-carbon … Read more
Chisels A chisel is a very simple but powerful tool. It is mostly used to cut light and thin metal sheets. You can think of it like a strong metal stick that helps in cutting other metals. Chisels are made from high carbon steel. This steel is strong and tough, which makes the chisel strong … Read more
Hammer – The Helping Hand of the Workshop A hammer is one of the most useful and commonly used tools in any workshop. It is a strong hand tool that helps us do many different kinds of work. We use a hammer to: In simple words, jobs like hammering, bending, shaping, cutting, and joining are … Read more
What is Electrical Safety? Electrical safety rules mean staying safe when using electricity. It is all about using electric machines and wires in the right way so that no one gets hurt. Electricity is very useful. It helps us light our homes, run fans, charge phones, and do so many things. But if we do … Read more
what is Files? The process of removing unwanted material in the form of powder by rubbing a rough surfaced tool from the surface of a workpiece is called filing and the cutting tool used for this purpose is called file. With the help of sandpaper, we can remove excess material in the form of fine particles from plane … Read more
electrical interview questions and answers if I connect a capacitor to a generator load? electrical interview questions and answers Answer:When you connect a capacitor to a generator, it helps to improve the power factor. This means it makes the generator work more efficiently. But this only helps if the generator’s engine is strong enough to … Read more
distinguish between centripetal force and centrifugal force What is Centripetal Force? To make anything move, we need to use force. Just like you push a toy car to make it roll or pull a cart to make it move, force helps things start moving. But not all movements are the same. Some objects move in … Read more
Understanding Angular and Linear Velocity Imagine you are spinning a wheel. The speed at which the wheel turns is called angular velocity. It tells us how fast something is turning around a fixed point. For example, if a fan is spinning, its blades are moving in a circle. Angular velocity helps us know how quickly … Read more
What is Circular Motion? Circular motion means moving around in a circle. When something goes round and round on the same path, we call it circular motion. Think about the hands of a clock, a fan spinning on the ceiling, or the wheel of a bicycle. They all move in a circle. That’s circular motion! … Read more
INTRODUCTION When we look at the many different things we measure in science—like speed, temperature, or weight—it may seem like we need a different unit for each one. But if we try to make a unique unit for every single thing, remembering all those units would become very confusing and nearly impossible. Luckily, many of … Read more
Introduction Friction is a force that tries to stop things from sliding or moving when they touch each other. It always works in the opposite direction of the push or pull that’s trying to move something. So, if you try to slide a box forward, friction pushes back. It only happens when two surfaces touch, … Read more
Non-Polarized Capacitors A capacitor is a small but very useful part used in many electrical and electronic devices. It has two ends (or terminals) and its main job is to store energy in the form of electricity. Think of it like a tiny battery that can charge and discharge quickly. Capacitors come in different shapes, … Read more
Introduction Capacitors are small parts used in electronic devices. They help store energy and manage how electricity flows. Think of a capacitor like a tiny battery that charges and discharges quickly. In many circuits, they are used to clean up signals, reduce sudden changes in power, and give a quick boost of energy when needed. … Read more
Fan Capacitors Electric fans are all around us. We use them in our homes, offices, factories, and even inside cars, trains, and computers. They help move air to keep us cool or to keep machines from overheating. Depending on how they get power, electric fans are mainly divided into three types: AC fans, DC fans, and AC/DC fans. … Read more
What is a Wirewound Resistors? A wirewound resistors is a small, strong part used in electrical circuits. Its main job is to control the flow of electric current -kind of like a traffic signal for electricity. Inside this resistor, there is a thin metal wire. This wire is wrapped around a solid core made of … Read more
What is Resistance? When electricity flows through a substance, it doesn’t always have a smooth path. The thing that tries to slow down or stop this flow is called resistance. Electricity is actually the movement of tiny particles called free electrons. These electrons move through a material to create an electric current. But inside every … Read more
relation between electric field and potential What is an Electric Field? Imagine a charged object, like a balloon rubbed on your hair. Around it, something invisible forms — a kind of invisible space where other charges can feel a push or a pull. That invisible space is called an electric field. It’s like the area … Read more
What is Ohm’s Law? State Ohm law Ohm’s Law helps us understand how electricity moves through wires and other materials. It shows the connection between three important things: Voltage (V), Current (I), and Resistance (R). A long time ago, a scientist from Germany named Georg Simon Ohm discovered this simple but powerful rule. He found … Read more
What is Wheatstone Bridge? A Wheatstone Bridge is a simple electrical circuit used to find an unknown resistance. It works like a balance scale. When the bridge is balanced, we can easily calculate the missing value. The circuit has four resistors: These resistors are connected in a diamond shape, like a bridge. That’s why it’s … Read more
Kirchhoff Law Class 12 Kirchhoff gave two laws to solve complex circuits, namely ; Kirchhoff Current Law ( KCL ) or Kirchhoff First Law Kirchhoff Current Law is a basic and very important rule in electricity. It helps us understand how electric current flows in a circuit. This law is about junctions in an electrical … Read more
what is Heating Effect of Electric Current When electricity flows through a wire or any other material, it produces heat. This is called the heating effect of electric current. Imagine tiny particles, called electrons, moving through the wire. As they move, they bump into other particles inside the wire. These bumps or collisions make the … Read more
The Story of Electricity 🌟 Long, long ago—before light bulbs, fans, or even batteries—people didn’t know what electricity was. But it was always there, hidden in nature, just waiting to be discovered. Imagine this: thousands of years ago, people saw lightning flash across the sky and felt little shocks when they touched certain objects. That … Read more
Operation “Sindoor“, On May 7, a powerful and precise action was taken by the Indian armed forces under Operation “Sindoor“, targeting nine terrorist locations in Pakistan and Pakistan-occupied Kashmir (POK). These strikes were carefully planned and carried out with great skill, aiming to dismantle areas being used to support terrorism. The situation became even more … Read more
inductor definition- When electric current is passed through a coil, the device that opposes the change in current is called an inductor and the opposition or obstruction of sudden change in current by the inductive effect of this inductor is called inductance. what is inductor? The inductor stores magnetic flux, with larger valued inductors capable … Read more
capacitor definition- A device made by placing a dielectric medium (bad conductor) between two metallic conductor plates is called a capacitor. A capacitor is a device that opposes changes in voltage. Mica, ebonite, air etc. are used as dielectric medium (bad conductor) in capacitor. Metals like tin, aluminium etc. are used for conductor plates in … Read more
Introduction- what is resistance? Imagine you’re trying to walk through a crowded room. The more people in your way, the harder it becomes to move forward. In the same way, when electricity flows through a material, tiny particles called electrons are trying to move forward. But they don’t get a clear path. The material they’re … Read more
atom and molecules class 9 notes Structure of Material– matter – particle – molecule – atom –stable atomic particle and unstable nuclear particles Molecules- Atom structure of atom class 11 notes The structure of an atom is made up of three fundamental particles, electron, proton and neutron. . Nucleus- Protons- Neutrons- Electron- particle Weight (in … Read more
what is Electricity? Types of Electricity- Electricity is mainly classified into two parts Static Electricity- Static electricity refers to the resting state of electrons, which is created by some rubbing or friction between two objects. what is electricity fact? If a glass rod is rubbed with a silk cloth, then due to the electrostatic effect … Read more
key point Introduction-(WHAT IS CHARGE?) What is electric Charge what is electricity Static Electricity Application of electric charge Computer printers, paint sprayers and seismographs are also based on electrostatics. Dynamic Electricity- Methods of electric Charge Generation- Charges are generated mainly in three ways- By friction- positively charged negatively charged glass rod cat skin woolen clothes … Read more
Introduction relay is an electrical device that senses the abnormal condition arising in the electrical circuit. Current transformer and trip coil are usually used as auxiliary equipment of the relay. Their combination is such that the relay gets energized when a short-circuit or overload fault occurs and the relay automatically operates and separates the faulty … Read more
Ever wondered how powerful electrical systems stay protected from overloads? That’s where HRC fuses come in. In this article, you’ll learn what an HRC fuse is, how it works, its types, and why it’s better than traditional fuses. What is an HRC Fuse? [Definition & Full Form] HRC stands for High Rupturing Capacity. It’s a … Read more
Definition of Switch Gears The devices used in switching, regulation, and protection of electrical circuits and equipment are installed in a panel board; these are collectively called switchgear. or switch gear meaning “The apparatus used for switching, Controlling and protecting the electrical circuits and equipment is known as Switch gear” Mainly switch gear equipment is … Read more
What is a DC Generator? A DC Generator is a machine that makes electricity. But not just any electricity — it makes DC electricity, which means Direct Current. Let’s make it super easy to understand. Imagine you have a toy fan that runs on batteries. The batteries give it power in one single direction — … Read more
key phase Transformers work on the principle of mutual induction. They have primary andsecondary windings that are electrically isolated from each other. As these windingsare wound on the same magnetic core, they are magnetically coupled to each other. The magnetic core is made from the laminations of either CRGO silicon steel or theamorphous alloy. … Read more
PVC wires or PVC insulated wires, are electrical cables with insulation made ofPVC (Polyvinyl Chloride), a plastic material. These wires are commonly utilized in variouselectrical applications because of their exceptional insulation, flexibility, durability, and cost-effectiveness. Wire A wire is a thin, pliable, and elongated conductor composed of a conductivesubstance, usually metal, employed for transferring electrical … Read more
Introduction A universal motor is a special type of motor which is designed to run on either DC or singlephase AC supply. These motors are generally series wound (armature and field winding are in series), andhence produce high starting torque (See characteristics of DC motors here). That is why, universalmotors generally come built into the … Read more
