Ohm’s Law Calculator

What is Ohm’s Law ?

Ohm’s Law is a key principle in electronics. It defines the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. According to this law, current flows through a conductor when voltage is applied across it, and the amount of current depends on the resistance of the conductor. The higher the resistance, the lower the current, for a given voltage.

The Ohm’s Law formula is: V = I × R, where:

–V is the voltage measured in volts (V)

–I is the current measured in amperes (A)

–R is the resistance measured in ohms (Ω)

Why Ohm’s Law Matters ?

Ohm’s Law plays a crucial role in designing, troubleshooting, and optimizing electronic circuits. It allows engineers to calculate one of the key electrical variables—resistance, voltage, or current—if the other two are known. By applying this law, engineers can create systems that function effectively and efficiently.

Want to explore resistors in more detail? Discover how to select the right ones for your circuits in our complete guide on resistor types and applications.

Use our Ohm’s Law Calculator to quickly calculate Resistance (R), Voltage (V), or Current (I) in your circuit. It’s a fast and easy way to ensure your designs and systems work as intended.