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Ohm's Law
Ohm's Law is the primary and fundimental rule in electricity & electronics.
In electricity 3 main properties exist:
Voltage (V)
Current (I)
Resistance (R)
If you know any two properties, the third can be calculated by using Ohm's law.
V = I x R
I = V divided by R
R = V divided by I
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A 'Watt' is the unit of electrical power. It can be calculated by the following:
W = V x I
W = (V x V) divided by R
W = (I x I) divided by R
Note: English notation (W & V).
For American notation, substitute:
W = P (Power)
V = E (EMF) [Electro Motive Force]
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Lest we forget...
"They shall grow not old, as we that are left grow old;
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning
We will remember them."
Last edited by DonaldG; 04-16-2008 at 07:17 AM.
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