This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.

Ag Power Web Enhanced Course Materials

If you experience any problems with the site, please contact Pete Hoffman immediately so corrections can be made. Pete can be reached on campus, via email at or by phone at 1.800.362.3322 ext 2727.

Ohm's Law

Ohms Law Calculation

Ohm's Law shows the relationship between

  • Voltage (E= Electromotive Force)
  • Current (I = Amps) and
  • Resistance (R = Ohms)

Ohm's Law is used to show the relationship between the voltage, amps and ohm's measured in an electrical circuit. We can calculate an unknown value simply by placing the two known values in a mathmatical equation.

The horizontal line in the equation (circle) means divide the 2 remaining values.

The verticle line on the bottom means to multiply the remaining values.

Click the term to see examples calculating Voltage, Current and Resistance.