P With I and R

P With I and R

E with I and R

E with I and P

E with P and R

I with E and R

I with P and E

I with P and R

R with E and I

R with E and P

R with P and I

P with I and E

P with I and R

P with E and R

Pie Chart

Ohms Watts Home

Electrician Math Home

Electrician Education Home

The wattage equals the current squared times the resistance.

So if you know the current of a component, square it then multiply the result times the resistance. The result will be wattage.

Example: If the current is .833 amps, square it then multiply the result times 144. The answer will be 100 watts.

Find sample problems HERE.

Find audio support HERE.

Click on any of these titles from Amazon.com which may be of interest to you.
Order them directly from Amazon.com with a debit or credit card.

Many electrician workbooks and practice exams are now available
as digital downloads for immediate use.
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.
Products For Sale
2006-2009 David U. Larson
dularson@bellsouth.net
Companion Website to ElectricianEducation.com and
TechnicianEducation.com
Other websites by David U. Larson which may be of interest:
http://www.visiteuropeonline.com
http://www.oldpostcardsforsale.com
http://www.houseflipguide.com
http://www.swedenroots.com
http://www.greenfieldvillageonline.com (soon)