Hysteresis loss and Eddy current loss and their difference
In electric machines, a varying magnetic field causes eddy currents in all metallic parts and hysteresis in ferromagnetic core. The losses caused due to eddy currents are known as eddy…
P-N Junction Diodes
What is a diode? A diode is an electrical component that allows the current to flow in only one particular direction. Diodes are made up of silicon and germanium. They…
Zener diodes – Operation, Symbol and V-I Characteristics
What are zener diodes? Zener diodes are silicon semiconductor devices that can allow the passage of current in both forward and reverse directions. Unlike p-n junction diodes, they are designed…
Difference between resistance and impedance
When we speak about DC electricity, resistance is the term used to refer to opposition to current flow whereas impedance is the term used in AC electricity. Impedance is basically…
Difference between EMF and Voltage
The difference between EMF and voltage is that the EMF is the potential difference measured across a power source without load connected to it whereas voltage is the potential difference…
Differences between resistance and resistivity
Understanding the differences between resistance and resistivity is very important as they are closely related. This article aims to bring you clarity on resistance and resistivity by comparing each of…
Electromagnetic Induction
Electromagnetic induction is a phenomenon by which electromotive force is produced across a conductor placed in a varying magnetic field. It was discovered by Michael Faraday in 1831 after performing…
Faraday’s law of electromagnetic induction
Michael Faraday discovered the phenomenon of electromagnetic induction in 1831 which was a major breakthrough and led to the invention of electric motor and generator. Faraday's law of electromagnetic induction…
Lenz’s law
Heinrich Friedrich Emil Lenz was a Russian physicist, working at the University of St. Petersburg, Russia. He formulated Lenz's law in 1834. This law predicts the direction of the current…
Differences between kW and kVA
kW and kVA are units of power. kW stands for kilo-watts and kVA stands for kilo-volts ampere. Let's see what is the difference between kW and kVA and how to…
