calculator for a protective resistor

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equation that describes this relationship.
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Inputs marked with "*" have switchable units, change with a click on it. The results will be presented automatically.

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Optimal Resistor Size: Success Label

If that value is technically not possible, use a resistor with the next bigger value.



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