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Electronics Basics: Ohms Law


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|DRC| psycheus






Friday, September 29 2006, 20:07:20 #36749     Electronics Basics: Ohms Law


I'm now in my second year of trade school and am learning about basic electricity. I thought I would post something I've learned..

Useful in dianosing any electrical circuit.

wikipedia.org wrote:
Ohm's law states that, in an electrical circuit, the current passing through most materials is directly proportional to the potential difference applied across them.

In mathematical terms, this is written as:

I = E divided by R (I - Current, E - Voltage, R - Resistance)

where I is the current, V is the potential difference, and R is a proportionality constant called the resistance. The potential difference is also known as the voltage drop, and is sometimes denoted by E or U instead of V.

The SI unit of current is the ampere; that of potential difference is the volt; and that of resistance is the ohm, equal to one volt per ampere. The law is named after the physicist Georg Ohm, who published it in 1826



http://www.the12volt.com/ohm/ohmslaw.asp

Some good links I've found:

Wikipedia.org on Ohms Law
Image-ination.com on Ohms Law
Nasa on Ohms Law
Electronics-tutorials.com on Ohms Law
csgnetwork.com - Ohms Law Calculator

Here's a good random link for physics java applets for formulas
http://www.walter-fendt.de/ph14e/index.html

Enjoy!
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|DRC| Zyprexa






Saturday, September 30 2006, 14:17:29 #36757     


Awesome! Good Thanks!
Your second graphic ownz!
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