Ohm's Law Calculator
Pick which quantity you need — Voltage, Current or Resistance — enter the other two, and get an exact result from Ohm's Law: V = I × R.
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FAQs
Does Ohm's Law apply to every component?
It applies exactly to ohmic (linear) resistors, where resistance stays constant with voltage/current. Some real components (diodes, bulbs at high current, etc.) don't follow it exactly — the formula itself is exact, but only where the component is genuinely ohmic.
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