Enter the voltage and resistance into the calculator to determine the electric current. This calculator can also evaluate any of the variables given the others are known.

Pouillets Law Formula

The following formula is used to calculate the electric current based on Pouillet’s Law (Ohm’s Law).

I = V / R


  • I is the electric current (Amperes)
  • V is the voltage across the two points (Volts)
  • R is the resistance of the conductor (Ohms)

To calculate the electric current, divide the voltage across the two points by the resistance of the conductor. This will give you the electric current in Amperes according to Pouillet’s Law.

What is Pouillets Law?

Pouillet’s Law, named after French physicist Claude Servais Mathias Pouillet, is a principle in physics that states the electric current passing through a conductor between two points is directly proportional to the voltage across the two points. This law is commonly known as Ohm’s Law, named after German physicist Georg Simon Ohm, who independently discovered the same principle.

How to Calculate Pouillet Law?

The following steps outline how to calculate the Pouillet Law using the formula: I = V / R.

  1. First, determine the voltage across the two points (V) in Volts.
  2. Next, determine the resistance of the conductor (R) in Ohms.
  3. Next, gather the formula from above: I = V / R.
  4. Finally, calculate the electric current (I) in Amperes.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

voltage (V) = 12 Volts

resistance (R) = 4 Ohms