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Science & Engineering · Calculator

Ohm's Law Calculator

Calculate voltage, current, or resistance using Ohm's Law.

Ohm's Law Calculator

Enter any two of voltage, current, or resistance.

Formula

V = I × R

Step-by-step

  1. V = I × R
  2. I = V / R
  3. R = V / I

Example

12V, 4Ω → 3A.

FAQ

What is Ohm's Law?+

V = I × R, relating voltage, current, and resistance.

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