Ohm's Law Calculator

VOLTS=Voltage, AMPS=Current, OHMS=Resistance, WATTS=Power

Enter any two of the above values

Voltage volts.
Current amps.
Resistance ohms
Power watts.


A little bit about the life and times of Georg Simon Ohm:

Georg Simon Ohm was a German physicist born in Erlangen, Bavaria, on March 16, 1787. As a high school teacher, Ohm started his research with the then recently invented electric cell, invented by Italian Conte Alessandro Volta.

Using equipment of his own creation, Ohm determined that the current that flows through a wire is proportional to its cross sectional area and inversely proportional to its length. Using the results of his experiments, Georg Simon Ohm was able to define the fundamental relationship between voltage, current and resistance.

These fundamental relationships are of such great importance, that they represent the true beginning of electrical circuit analysis. Unfortunately, when Ohm published his finding in 1827, his ideas were dismissed by his colleagues.

Ohm was forced to resign from his high-school teaching position and he lived in poverty and shame. However, his research efforts gained a lot of support outside of Germany. In 1849, Georg Simon Ohm was finally recognized for his efforts by being appointed as a professor at the University of Munich.