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Ohms Watts Home

Electrician Math Home

Electrician Education Home

The wattage equals the voltage squared divided by the resistance.

If you know the voltage, square it then divide by the resistance to find wattage.

Example: The voltage is 120, squared is 14,400 divided by resistance of 144 is 100 watts.

Find sample problems HERE.

Find audio support HERE.

 

 
 

 

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Many electrician workbooks and practice exams are now available 
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Click HERE to see what is available.
The next Journeyman Electrician Course in Port St. Lucie begins September 12th, 2009. Details HERE.
The next Master Electrician Course in Port St. Lucie begins January 9th, 2010. Details HERE.
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