Ohm's Law Calculator | CalHub

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Ohm's Law Calculator

Calculate voltage, current, or resistance quickly using CalHub’s free tool.

Result

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About Ohm's Law

Ohm's Law is a fundamental principle in electronics that relates voltage, current, and resistance in an electrical circuit. This calculator helps students and engineers solve Ohm’s Law problems instantly.

How to Use?

  1. Enter values for any two variables (Voltage, Current, or Resistance).
  2. Leave the variable you want to calculate empty.
  3. Click "Calculate" to find the missing value.

Frequently Asked Questions

Yes, the Ohm's Law Calculator is completely free to use.

Ohm's Law states that Voltage (V) = Current (I) × Resistance (R).

Yes, you can calculate any one of them if the other two values are provided.

No registration is required; it is free and instant.

Yes, this tool works for both students learning electronics and professionals in engineering.