Calculate resistance, voltage, current, or power. Just enter two known values, and the results will appear instantly.

Ohm's law calculator with solution.

Use DigiKey's Ohm's Law calculator to quickly calculate resistance, current, voltage, and power.

Resistance measurements are normally taken to indicate the condition of a component or a circuit. The higher the resistance, the lower the current flow. If the resistance is abnormally …

Jan 8, 2026 · The resistance of a conductor, or circuit element, generally increases with increasing temperature. When cooled to extremely low temperatures, some conductors have …

Use our resistance calculator to calculate the resistance in ohms given voltage, current, or power. See the formulas to calculate resistance.

Sep 27, 2025 · Master electrical resistance with step-by-step calculations, Ohm's Law applications, and practical examples. Learn how resistance affects current flow, power …

Use this Ohm's Law calculator to easily calculate the power, resistance, voltage, or electrical current, based on two known parameters. Enter any two parameters to calculate the other two.

Electrical resistance shares some conceptual parallels with mechanical friction. The SI unit of electrical resistance is the ohm (Ω), while electrical conductance is measured in siemens (S) …

The article provides an overview of electrical resistance, covering its definition, unit, and factors affecting it, such as conductor length, cross-sectional area, and material composition.