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Ohm's Law relates the three fundamental electrical quantities: voltage, current
and resistance. Power relationships are also given.
Click here for a much more extensive treatment of
Ohm's Law.
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V = I · R
P = I · V
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I = V
R
P = I2 R
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R = V
I
P = V2
R
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I = Current (A)
P = Power (W)
R = Resistance (Ω)
V = Voltage (V)
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