Ohm's law for AC
E296670
Ohm's law for AC is the extension of Ohm’s law to alternating current circuits, relating voltage, current, and impedance (including resistance, inductive reactance, and capacitive reactance) using complex numbers and phasors.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ohm's law for AC canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2764138 — 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: Ohm's law for AC Context triple: [Theory and Calculation of Alternating Current Phenomena, appliesConcept, Ohm's law for AC]
-
A.
Kirchhoff's circuit laws
Kirchhoff's circuit laws are fundamental rules in electrical engineering that describe how electric charge and energy are conserved in electrical circuits through relationships among currents and voltages.
-
B.
Steinmetz equivalent circuit
The Steinmetz equivalent circuit is a simplified electrical model used to represent and analyze the behavior of alternating current (AC) machines, particularly induction motors and transformers, in terms of their key electrical parameters.
-
C.
Ampère's force law
Ampère's force law is a fundamental principle in electromagnetism that quantifies the mechanical force between electric currents in conductors.
-
D.
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.
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E.
Theory and Calculation of Alternating Current Phenomena
Theory and Calculation of Alternating Current Phenomena is a foundational electrical engineering text that systematically develops the mathematical analysis and practical design principles of alternating current (AC) circuits and machinery.
- 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: Ohm's law for AC Target entity description: Ohm's law for AC is the extension of Ohm’s law to alternating current circuits, relating voltage, current, and impedance (including resistance, inductive reactance, and capacitive reactance) using complex numbers and phasors.
-
A.
Kirchhoff's circuit laws
Kirchhoff's circuit laws are fundamental rules in electrical engineering that describe how electric charge and energy are conserved in electrical circuits through relationships among currents and voltages.
-
B.
Steinmetz equivalent circuit
The Steinmetz equivalent circuit is a simplified electrical model used to represent and analyze the behavior of alternating current (AC) machines, particularly induction motors and transformers, in terms of their key electrical parameters.
-
C.
Ampère's force law
Ampère's force law is a fundamental principle in electromagnetism that quantifies the mechanical force between electric currents in conductors.
-
D.
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.
-
E.
Theory and Calculation of Alternating Current Phenomena
Theory and Calculation of Alternating Current Phenomena is a foundational electrical engineering text that systematically develops the mathematical analysis and practical design principles of alternating current (AC) circuits and machinery.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
AC circuit law
ⓘ
electrical law ⓘ |
| appliesTo | alternating current circuits ⓘ |
| assumes |
linearity of circuit elements
ⓘ
sinusoidal steady-state conditions ⓘ time invariance of circuit parameters ⓘ |
| componentForm |
X = X_L - X_C
ⓘ
X_C = 1 / (ωC) ⓘ X_L = ωL ⓘ Z = R + jX ⓘ |
| contrastsWith | Ohm's law for DC which uses only resistance ⓘ |
| defines | impedance as the ratio of voltage phasor to current phasor ⓘ |
| distinguishes | magnitude and phase of voltage and current ⓘ |
| domain | linear time-invariant AC circuits ⓘ |
| enablesCalculationOf |
current from known voltage and impedance
ⓘ
impedance from measured voltage and current ⓘ voltage from known current and impedance ⓘ |
| expressedAs |
I = V / Z
ⓘ
V = I Z ⓘ Z = V / I ⓘ |
| field |
electrical engineering
ⓘ
electronics ⓘ power engineering ⓘ |
| generalizes | Ohm's law for DC ⓘ |
| implies | phase difference between voltage and current depends on impedance angle ⓘ |
| relates |
current
ⓘ
impedance ⓘ voltage ⓘ |
| relatesToComponent |
pure capacitor in AC has Z = 1 / (jωC)
ⓘ
pure inductor in AC has Z = jωL ⓘ pure resistor in AC has Z = R ⓘ |
| relatesToQuantity |
rms current
ⓘ
rms voltage ⓘ |
| typicalForm | V̄ = Ī Z̄ (phasor notation) ⓘ |
| usedIn |
AC network analysis
ⓘ
AC power analysis ⓘ filter design ⓘ impedance matching ⓘ phasor circuit analysis ⓘ |
| usesMathematicalTool |
complex numbers
ⓘ
phasors ⓘ |
| usesQuantity |
capacitive reactance
ⓘ
impedance magnitude ⓘ impedance phase angle ⓘ inductive reactance ⓘ reactance ⓘ resistance ⓘ |
| validWhen | frequency is constant ⓘ |
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: Ohm's law for AC Description of subject: Ohm's law for AC is the extension of Ohm’s law to alternating current circuits, relating voltage, current, and impedance (including resistance, inductive reactance, and capacitive reactance) using complex numbers and phasors.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.