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Articles Written 26

## Conductance and Resistivity

Conductance, Temperature coefficient, resistivity and specific resistance are the properties of an electric conductor or any other material. They all can be understood by resistance. Resistance is the amount of obstruction in the flow of […]

## What is an Electrical Circuit?

Electrical circuit is an interconnection of electrical components. An electrical circuit consists of batteries, resistors, inductors, capacitors, switches or transistors. An electrical network consists of a closed loop. A circuit is a closed path where […]

## Types of Resistors

Resistors can be seen in almost all electronic circuits. There are many types of resistors and they can be divided into two groups namely fixed resistor and adjustable resistor (variable resistor). The main function of […]

## Voltage Source and Current Source – Ideal vs. Practical

A source is a device which converts mechanical, chemical, thermal or some other form of energy to electrical energy. The types of sources available in the electrical network are the voltage source and the current […]

## What is Electrical Resistance?

The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor. A conductor has free electrons randomly moving inside. When an electric potential is applied to it, the electrons collide […]

## How to Measure Current in a circuit using Ammeter

Current is the measure of the rate of flow of electric charges across the conductor. It is measured in the unit of Ampere. This current measurement in a circuit is mostly done by Ammeter. Ammeter […]

## Alternating Current (AC) vs. Direct Current (DC)

Electric current is the amount of electric charges that passes through a wire with respect to time. When battery is connected across a conductor, electrons move from negative terminal to positive terminal of battery. They […]

## Electricity Basics

Basic Electricity is the presence of motion of electric charges. Electricity is all around us powering houses, offices and technologies like our cell phones, computers, lights, soldering irons, and air conditioners. We can’t imagine this […]

## Drift Current Drift Velocity and Electron Mobility

As you all know that an electric conductor has free electrons inside them, due to movement of these free electrons, current is produced and when we give them energy via connecting battery, the electrons move […]

## Conventional Current vs. Electron Current

Electron current and conventional current are two types of notation we use to mention current flow in a circuit. These two notations are opposite to each other. We need a notation to do some calculations […]