Welcome! Ohm’s Law Calculator. What is Ohm’s Law?It’s a Law was named after a famous German physicist George Simon Ohm. He Introduced this law that was named from his name as ” Ohm’s Law “. The most basic thing while starting with either electronics or electrical. It is an electrical fundamental that states the relationship between the Current, Voltage, and resistance. Ohm’s Law states that current is directly proportional to voltage whereas inversely proportional to resistance. This law also explains about electricity’s behavior. Below are three different calculators to find voltage current and resistance separately by using ohms law.