Ohm’s Law Calculator — Resistance and Power
Calculate resistance R=V/I and power P=VI from voltage and current with Ohm’s-law formulas. Example: V=12, I=2 → R=6 Ω, P=24 W. Browser-only circuit math for a quick process check.
How it works
Enter voltage and current. This mode solves resistance and also shows power.
Formula
R=V/I; P=VI. Notes:
- Units must be consistent (e.g., volts and amperes → ohms, watts).
- Ideal DC form only.
- Pair with density / velocity tools.
Example
Example: V=12, I=2 → R=6, P=24.
When to use it
- Electronics homework.
- Quick bench check.
- Compare related physics tools.
Frequently asked questions
Sample?
12 V / 2 A → 6 Ω, 24 W.
AC?
Not modeled.
I=0?
Rejected.
Advice?
Educational only.
Related tools
Questions or feedback
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