Electrical fundamentals and electronics · Electrical basics
Ohm’s law: solve one missing value
Enter exactly two values to solve the third in a simple resistive DC circuit.
Method and scope
Ohm’s law V = I × R; supply any two of voltage, current, and resistance to calculate the third.
Use Ohm’s law in a classroom example for an ideal ohmic component. Intended for Learners, Electronics hobbyists.
Inputs- Voltage — V, mV, kV
- Current — A, mA
- Resistance — Ω, kΩ, MΩ
SOURCE AND LIMITS
Assumptions: The component is treated as an ideal, ohmic resistor under fixed conditions. Voltage and current are entered as non-negative magnitudes; resistance is positive.
Limitations: Many real components are nonlinear or change with temperature and operating point.
Method version 1.0.1 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.Explore related fields
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