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SCIENCE

The Claim

Ohm's Law states that voltage equals current multiplied by resistance, expressed as V = IR.

The Short Version

Reliable physics and engineering references define Ohm’s Law as V = IR—voltage equals current multiplied by resistance. The statement accurately reproduces the law’s standard formulation and is consistently confirmed across independent sources. While the law applies only to materials that behave ohmically under stable conditions, that limitation does not alter what the law itself states.

Caveats

  • Ohm’s Law holds for conductors whose resistance remains constant; it breaks down for diodes, transistors, and reactive AC circuits.
  • Georg Ohm originally framed the relationship as a proportionality; V = IR is the modern algebraic form.
  • Some introductory texts omit the above caveat, which can lead readers to infer broader applicability than the law actually has.

The Receipts

  1. Georg Ohm - Magnet Academy - National MagLab

    National MagLab

  2. Learn the Basics: Ohm's Law and Its Equation - School of PE

    School of PE

  3. Ohm's Law: Voltage, Current, and Resistance

    ROHM Tech Web

  4. Ohm's Law - Electricity - NDE-Ed.org

    NDE-Ed.org

  5. Ohm's Law and the V-I-R Relationship - The Physics Classroom

    The Physics Classroom

  6. Ohm's Law 101: Its Formula, History, and Applications

    Interesting Engineering

  7. OHM'S LAW - MAKER LESSONS

    Maker Lessons

  8. Historical Innovations using Ohms Law in Early Electronics ...

    EIM Technology

  9. History of Ohm's Law in 60 Seconds - YouTube

    YouTube

  10. Ohm's Law: History and Biography - YouTube

    YouTube

+ 2 more sources — see the full list on Lenz

Filed Under

Georg Simon OhmOhm's Law

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