Change country, reading language or displayed units. Legal and licensing information always stays inside the selected work jurisdiction. Ohm's law uses V=IR to express the basic relationship among voltage, current, and resistance; this content is conceptual only. Voltage, current, and resistance share one basic mathematical relationship. This is conceptual learning, not an instruction to work energized. Example units can be switched for learning, but unit presentation does not establish equivalent materials, conductor designations, installation rules, or licensing requirements in Ontario. No. Display units may change, but the formula and compliance boundaries do not. This is not energized-work or field-installation instruction. Ohm's law describes the relationship among voltage, current, and resistance.Choose your work context
The core of Ohm's law
The core of Ohm's law
Ontario learning context
FAQ
Does changing display units change Ohm's law?
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