Understanding Ohm's Law

Ohm's Law is one of the most fundamental principles in electronics and physics. It describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. The law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points.

The Ohm's Law Formulas

The relationship can be expressed in three key formulas, which our calculator can solve for:

• To find Voltage (V): V = I × R (Current multiplied by Resistance)
• To find Current (I): I = V / R (Voltage divided by Resistance)
• To find Resistance (R): R = V / I (Voltage divided by Current)

Our calculator allows you to input any two of these values to find the third, making it an essential tool for circuit design, analysis, and troubleshooting. Whether you're a student learning the basics, a hobbyist building a project, or an engineer at work, this calculator simplifies the process and provides instant, accurate results.