Electrical units | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electricity


00:02:35 1 History
00:10:01 2 Concepts
00:10:11 2.1 Electric charge
00:14:01 2.2 Electric current
00:18:15 2.3 Electric field
00:22:26 2.4 Electric potential
00:25:29 2.5 Electromagnets
00:28:21 2.6 Electrochemistry
00:29:05 2.7 Electric circuits
00:32:32 2.8 Electric power
00:33:17 2.9 Electronics
00:34:40 2.10 Electromagnetic wave
00:36:03 3 Production and uses
00:37:29 3.1 Generation and transmission
00:37:39 3.2 Applications
00:41:12 4 Electricity and the natural world
00:44:22 4.1 Physiological effects
00:44:33 4.2 Electrical phenomena in nature
00:45:47 5 Cultural perception
00:47:59 6 See also
00:50:25 7 Notes



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SUMMARY
=======
Electricity is the set of  physical phenomena associated with the presence and motion of matter that has a property of electric charge. In early days, electricity was considered as being not related to  magnetism.  Later on, many experimental results and the development of Maxwell's equations indicated that both electricity and magnetism are from a single phenomenon: electromagnetism.  Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others.
The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field.
When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. Thus, if that charge were to move, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of positive charge from an arbitrarily chosen reference point to that point without any acceleration and is typically measured in volts.
Electricity is at the heart of many modern technologies, being used for:

electric power where electric current is used to energise equipment;
electronics which deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies.Electrical phenomena have been studied since antiquity, though progress in theoretical understanding remained slow until the seventeenth and eighteenth centuries. Even then, practical applications for electricity were few, and it would not be until the late nineteenth century that electrical engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry and society, becoming a driving force for the Second Industrial Revolution. Electricity's extraordinary versatility means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. Electrical power is now the backbone of modern industrial society.