Ohm's Law & Circuit Analyzer
Solve for voltage, current, resistance, or power using Ohm's Law.
The relationship behind V = IR
Voltage, current, and resistance in a circuit are locked together by Ohm's Law. Knowing any two lets you solve for the third, which is why this tool only needs two of the three values to compute the missing one.
Where Ohm's Law doesn't apply cleanly
The law assumes a simple resistive (ohmic) component. Parts like diodes and transistors don't have constant resistance and don't follow a straight-line voltage-current relationship, so Ohm's Law alone won't accurately describe their behavior.