E with P and R
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.
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