Archive:Principles of Electricity

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Basic formulas calculating resistance, current, voltage, and power-
where:

V= voltage (Measured in Volts)
I= current (Measured in Amperes)
R= resistance (Measured in Ohms)
P= power (Measured in Watts)

Ohm's Law <math>V=I*R</math>
Power Law <math>P=V*I</math>
<math>P=(I^2)*R</math>
<math>P=(V^2)/R</math>

note 2 values must be given to find unknown