A nickel-cadmium cell has two plates. The active material of the positive plate (anode) is Ni(OH)4 and the negative plate (cathode) is of cadmium (Cd) when fully charged. The electrolyte is a solution of potassium hydroxide (KOH) with a small addition of lithium hydrate which increases the capacity and life Read more…
Hi friends, In this article, I am going to discuss the nickel-iron battery working principle and construction., and compare its features with a lead-acid battery. So keep reading. The Nickel-Iron alkaline cell was developed by an American scientist Thomson A. Edison in 1909. Therefore it is also known Read more…
All new completed electrical installation should be tested before connection to the supply, to ensure that the installation is technically sound and free from any possible short circuits, etc. the main reasons, to test a new electrical installation or house wiring before it is switched on to the mains are Read more…
In this article I am discussing about purpose of neutral wire in 3 phase 4 wire system. After reading this article you will be able to understand some very amazing facts about need of neutral in three phase distribution system. The power from generating stations is transmitted over long Read more…
The Kirchhoff’s Laws are very useful in solving electrical networks which may not be easily solved by Ohm’s Law. In this article, I will describe these laws and will show some of Kirchhoff’s voltage law examples to make these laws easily understandable. Kirchhoff’s Laws, two in number, are as follows: Read more…
Normally, no current flows through insulators or dielectric materials. However, when the voltage applied to such materials exceeds a certain value, then it breaks down and a heavy electric current (much larger than the usual leakage current) flows through it. If the insulator is a solid medium, it gets punctured Read more…
Hi friends, in this article, I am going to discuss about lead acid battery charging and hope my article will increase your knowledge about lead acid batteries. Lead-acid batteries are charged by: Constant current method, and Constant voltage method. In the constant current method, a fixed value of current Read more…
Hi friends, in this article, I am discussing about the lead acid battery charging and discharging equations and hope you will find it informative and helpful. A lead-acid battery is the most inexpensive battery and is widely used for commercial purposes. It consists of a number of lead-acid cells Read more…
When the voltage is applied to an electrical circuit, the free electrons starts moving. When they are moving they collide with the other atoms and molecules of the substance. These collisions offer opposition to the flow of electrons or current called electric resistance. Electric Resistance Definition | Formula | Read more…
Electric Current Definition In metals, there are a large number of free electrons which moves randomly from atom to atom. When the electric potential difference is applied across a wire of metal, free electrons which are negatively charged, attracted by positive terminal of the cell. Due to this Read more…