Heaters and refrigerators have become indispensable for our daily life. Though these are the electronic apparatus, it is quite natural that they also have some technical problems for some reason. Often we want to fix their problems by ourselves, but it is not our job, so we made the situation worse. Think if you have broken your leg and instead of going to the doctor you try to do your treatment on your own. So, your leg will not become fixed by yourself for that you need a doctor’s supervision. Just like it, the machines need a professional’s guidance, so that they can work properly.
Electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives a wide variety of well-known effects, such as lightning,static electricity, electromagnetic induction and electrical current. In addition, electricity permits the creation and reception of electromagnetic radiation such as radio waves.
In electricity, charges produce electromagnetic fields which act on other charges. Electricity occurs due to several types of physics: