How this calculator works
Current equals voltage divided by resistance: I = V/R.
Formula
I=V/RCurrent from voltage and positive resistance.
Worked example
Verified example is a verified test case used by the calculation engine.
Assumptions and limitations
- Resistance must be greater than zero.
- Voltage may be signed.
- Use compatible electrical units.
Methodology & sources
This calculator uses deterministic, versioned calculation logic. The formula and verified examples above are part of the calculation definition used by CalcuMint. Technical calculation version: 1.
- CalcuMint deterministic physics engine
Frequently asked questions
Why must resistance be positive?
This calculator divides by resistance, so zero resistance is outside this model.
Can current be negative?
Yes when voltage is negative under the selected sign convention.