Ohm's law ( mz)n. The law stating that the direct current flowing in a conductor is directly proportional to the potential difference between its ends. It is usually formulated as V = IR, where V is the potential difference, or voltage, I is the current, and R is the resistance of the conductor. [After Georg Simon Ohm.] |
Ohm's law
n
(Physics / General Physics) the principle that the electric current passing through a conductor is directly proportional to the potential difference across it, provided that the temperature remains constant. The constant of proportionality is the resistance of the conductor
[named after Georg Simon Ohm (1787-1854), German physicist]
| Ohm's law (mz) A law relating the voltage difference between two points, the electric current flowing between them, and the resistance of the path of the current. Mathematically, the law states that V = IR, where V is the voltage difference, I is the current in amperes, and R is the resistance in ohms. For a given voltage, higher resistance entails lower current flow. |
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| Noun | 1. | Ohm's law - electric current is directly proportional to voltage and inversely proportional to resistance; I = E/R law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics" |
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