E With P and R

E with P and R

 

E with I and R

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E with P and R

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I with P and R

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P with E and R

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Ohms Watts Home

Electrician Math Home

Electrician Education Home

Voltage equals the square root of the quantity of power times resistance.

So if you know the wattage and resistance of a circuit, and want to find voltage, simply multiply watts times ohms. Then find the square root of this product. The result will be voltage.

Example: If the wattage of a component is 100 watts and the resistance is 144 ohms, then 100 times 144 equals 14,400. The square root of the result is 120 volts.

Find sample problems HERE.

Find audio support HERE.

 

 

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