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The use of alternating current permits voltages to be altered via Transformers, so for efficiency the voltage at the generator can be stepped up for transmission to reduce losses and cost, then stepped down again at the user's end to whatever voltage is needed. For safety reasons homes use a lower voltage than does industry. Multi-phases can be used to give more than one voltage from the same supply without transformers.
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How many people work at the post office today?
Today the average is 790000 people :D
Did Thomas Edison's discovery change the way people live today?
yes
Why can people be happy?
because if people were not happy the world wold not be the way it is today it would be a crazy,hectict,wierd world.
What is the current atom model?
A dense nucleus of protons and neutrons surrounded by electron clouds of different shapes and sizes.
Where is Nicholas Flammel today?
In my own opinion, he's out there, somewhere..hiding...from the envious people who misunderstood's the truth.
What kind of electricity is commonly used today?
AC, or alternating current.
How does nomes culture contribute today?
how does their culture contribute to nome today
How did nikola teslas accomplishments change the world?
One of the most important things he did was create AC current or alternating current. AC current is used in the light bulbs we use today.
How does Nikola Tesla's invention of alternating current effect us today?
It power our homes, schools, apliaciancens and His coil was the basis on wirelles communication.
How did Nickola use electricity?
Nikola Tesla was the inventor of the alternating current light and power system in use all over the world today.
What does oscillograph mean?
An oscillograph is an instrument for measuring alternating or varying electric-currentin terms of current and voltage. There are two instruments that are in common use today:
What are the 2 basic types of currents?
The main division is between alternating current (AC) and direct current (DC). AC is universal now for domestic and industrial supply, but DC used to be used in some places in the early part of last century. Automobiles use DC at 12V which is I think universal now. AC in domestic use can be at 50Hz (Europe and many other places) or 60Hz (North America), and can be at either 240V or 120V.
What was the voltage of early electricity?
Edison's original plan called for 90V DC (Direct Current). Alternating current is used today, due to its ability to transfer power efficiently over longer distances.
When did Nikola Tesla invent the electromagnetic motor?
By 1888 Nikola Tesla built and patented his alternating current motor wich is the one to power homes and builduings today.
What is DC power?
Direct current (DC or "continuous current") is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also be through semiconductors, insulators, or even through a vacuum as in electron or ion beams. In direct current, the electric charges flow in the same direction, distinguishing it from alternating current (AC). A term formerly used for direct current was Galvanic current. Direct current may be obtained from an alternating current supply by use of a current-switching arrangement called a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be made into alternating current with an inverter or a motor-generator set. The first commercial electric power transmission (developed by Thomas Edison in the late nineteenth century) used direct current. Because of the advantage of alternating current over direct current in transforming and transmission, electric power distribution today is nearly all alternating current. For applications requiring direct current, such as third rail power systems, alternating current is distributed to a substation, which utilizes a rectifier to convert the power to direct current. See War of Currents. Direct current is used to charge batteries, and in nearly all electronic systems as the power supply. Very large quantities of direct-current power are used in production of aluminum and other electrochemical processes. Direct current is used for some railway propulsion, especially in urban areas. High voltage direct current is used to transmit large amounts of power from remote generation sites or to interconnect alternating current power grids.
What is the current population of Norway as of today?
4.9 million people.
Why people use I not A for amps?
It was originally used for "current" which is represented today in amps. It stood for the (intensity) of the current.
