Joule’s law of heating
E868104
Joule’s law of heating is a fundamental principle in electricity stating that the heat produced in a conductor is proportional to the square of the current, the resistance, and the time the current flows.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Joule heating law | 1 |
| Joule's law | 1 |
| Joule’s first law | 1 |
| Joule’s law | 1 |
| Joule’s law of heating canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10511438 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Joule’s law of heating Context triple: [James Prescott Joule, notableFor, Joule’s law of heating]
-
A.
Fourier's law of heat conduction
Fourier's law of heat conduction is a fundamental physical principle that relates heat flux within a material to the negative gradient of temperature, forming the basis of classical heat transfer theory.
-
B.
Faraday's law of induction
Faraday's law of induction is a fundamental principle of electromagnetism that relates changing magnetic flux through a circuit to the induced electromotive force (voltage) in that circuit.
-
C.
Ohm's law for electrical conduction
Ohm's law for electrical conduction is a fundamental principle stating that the current through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.
-
D.
Dulong–Petit law
The Dulong–Petit law is an early empirical rule in thermodynamics stating that many solid elements have approximately the same molar heat capacity at high temperatures.
-
E.
Kirchhoff's law of thermal radiation
Kirchhoff's law of thermal radiation is a fundamental principle in thermodynamics stating that, for a body in thermal equilibrium, its emissivity equals its absorptivity at each wavelength.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Joule’s law of heating Target entity description: Joule’s law of heating is a fundamental principle in electricity stating that the heat produced in a conductor is proportional to the square of the current, the resistance, and the time the current flows.
-
A.
Fourier's law of heat conduction
Fourier's law of heat conduction is a fundamental physical principle that relates heat flux within a material to the negative gradient of temperature, forming the basis of classical heat transfer theory.
-
B.
Faraday's law of induction
Faraday's law of induction is a fundamental principle of electromagnetism that relates changing magnetic flux through a circuit to the induced electromotive force (voltage) in that circuit.
-
C.
Ohm's law for electrical conduction
Ohm's law for electrical conduction is a fundamental principle stating that the current through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.
-
D.
Dulong–Petit law
The Dulong–Petit law is an early empirical rule in thermodynamics stating that many solid elements have approximately the same molar heat capacity at high temperatures.
-
E.
Kirchhoff's law of thermal radiation
Kirchhoff's law of thermal radiation is a fundamental principle in thermodynamics stating that, for a body in thermal equilibrium, its emissivity equals its absorptivity at each wavelength.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
law of electricity
ⓘ
physical law ⓘ |
| alsoKnownAs |
Joule heating law
ⓘ
linked to:
Joule’s law of heating
Joule’s first law ⓘ
linked to:
Joule’s law of heating
|
| appliesTo |
electrical conductors
ⓘ
resistive elements ⓘ |
| assumes |
constant resistance during the time interval
ⓘ
ohmic conductor ⓘ |
| category | classical physics ⓘ |
| describes | conversion of electrical energy into heat ⓘ |
| discoveredBy | James Prescott Joule ⓘ |
| explains |
I^2R losses in power transmission lines
ⓘ
temperature rise in resistors ⓘ |
| field |
electrical engineering
ⓘ
electromagnetism ⓘ thermodynamics ⓘ |
| hasAlternativePowerForm |
P = V I
ⓘ
P = V^2 / R ⓘ |
| hasFormula | Q = I^2 R t ⓘ |
| hasPowerForm | P = I^2 R ⓘ |
| historicalPeriod | 19th century ⓘ |
| implies | power dissipated in a resistor is proportional to the square of the current ⓘ |
| isConsequenceOf | conservation of energy ⓘ |
| isRelatedTo |
Fourier’s law of heat conduction
ⓘ
linked to:
Fourier's law of heat conduction
Ohm’s law ⓘ
linked to:
Ohm's law for electrical conduction
|
| isUsedIn |
design of electric heaters
ⓘ
design of fuses ⓘ electric kettles ⓘ electric stoves ⓘ incandescent lamps ⓘ safety analysis of electrical circuits ⓘ thermal management of electronic devices ⓘ |
| mathematicalForm | Q ∝ I^2 R t ⓘ |
| namedAfter | James Prescott Joule ⓘ |
| proportionalTo |
resistance
ⓘ
square of current ⓘ time of current flow ⓘ |
| relatesQuantity |
electric current
ⓘ
electrical resistance ⓘ heat generated ⓘ time ⓘ |
| states | heat produced in a conductor is proportional to the square of the current, the resistance, and the time of flow ⓘ |
| unitOfHeatEnergy | joule ⓘ |
| usesSymbol |
I for current
ⓘ
Q for heat energy ⓘ R for resistance ⓘ t for time ⓘ |
| validWhen |
current distribution is uniform in the conductor
ⓘ
frequency effects like skin effect are negligible ⓘ |
| yearProposed | 1840s ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Joule’s law of heating Description of subject: Joule’s law of heating is a fundamental principle in electricity stating that the heat produced in a conductor is proportional to the square of the current, the resistance, and the time the current flows.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Joule’s law of heating
linked to: Joule’s law of heating
linked to: Joule’s law of heating
linked to: Joule’s law of heating