{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.resistor","code":"thing-q5321","url":"https://ver.cy/models/thing/q5321/","name":"resistor","alternateNames":["liquid resistor","resistance thermometer","platinum resistance thermometer","photoresistor","zero-ohm link","bleeder resistor","inrush current limiter","heating element","Urdox","self-regulating heater","heating wire","power resistor"],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A passive electronic component that opposes the flow of electric current with a defined resistance, used to set currents and voltages, divide voltages, terminate lines, dissipate power and sense temperature or light; resistors are made as carbon, metal film, wirewound, thick film and other types, rated by resistance, tolerance and power, and marked by colour bands or codes.","purpose":"Let an agent identify resistor types and read their markings, explain how resistors are chosen and used in circuits, relay standards and ratings, and distinguish fixed resistors from variable, sensing and special forms.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Defined resistance","Passive two-terminal device","Types by material and construction","Standard value series"],"structure":{"bundles":[{"id":"identify","name":"Identify","description":"What resistor this is.","layers":[{"id":"type","name":"Type","description":"Type and markings.","findings":[{"id":"type-finding","name":"Type","description":"Type.","questions":[{"text":"What type is the resistor, and how are its markings read?","kind":"definition"},{"text":"Is the component a fixed resistor, a variable one or a sensing device?","kind":"boundary"}]}]},{"id":"ratings","name":"Ratings","description":"Ratings.","findings":[{"id":"ratings-finding","name":"Ratings","description":"Ratings.","questions":[{"text":"What do resistance, tolerance, power and temperature coefficient ratings mean?","kind":"definition"},{"text":"Which entry fits the specific sensing device?","kind":"action"}]}]}]},{"id":"use","name":"Use","description":"Circuit use.","layers":[{"id":"circuits","name":"Circuits","description":"Circuit functions.","findings":[{"id":"circuits-finding","name":"Circuits","description":"Circuits.","questions":[{"text":"How are resistors used to set currents, divide voltages, bleed charge and terminate lines?","kind":"provenance"},{"text":"Which entry fits the specific circuit?","kind":"action"}]}]},{"id":"select","name":"Select","description":"Selection.","findings":[{"id":"select-finding","name":"Select","description":"Select.","questions":[{"text":"How is a resistor value and type chosen for a given circuit?","kind":"action"},{"text":"What value and rating follow for the case in question?","kind":"measurement"}]}]}]},{"id":"standards","name":"Standards","description":"Standards and manufacture.","layers":[{"id":"series","name":"Series","description":"Preferred values.","findings":[{"id":"series-finding","name":"Series","description":"Series.","questions":[{"text":"What are the E-series preferred values and marking codes?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"manufacture","name":"Manufacture","description":"Manufacture.","findings":[{"id":"manufacture-finding","name":"Manufacture","description":"Manufacture.","questions":[{"text":"How are resistors of different types made?","kind":"provenance"},{"text":"Which entry fits electronic manufacturing?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"History and teaching.","layers":[{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did resistors develop from early wire coils to chip resistors?","kind":"provenance"},{"text":"Which entry fits the history of electronics?","kind":"action"}]}]},{"id":"teach","name":"Teach","description":"Teaching.","findings":[{"id":"teach-finding","name":"Teach","description":"Teaching.","questions":[{"text":"How are resistors taught, and which misconceptions arise?","kind":"provenance"},{"text":"Which entry fits electronics education?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Read a resistor's colour code or marking and report its value and tolerance.","Select resistors for a circuit within their rated power and voltage."],"mustNot":["Fit a resistor that will run above its power rating where it can overheat or ignite.","Substitute a part in a safety or medical circuit without the designer's approval.","Misreport a resistor's value or tolerance in a parts list.","Discard electronic waste outside proper collection."],"requiresHuman":["Approving changes to a circuit that protects people, such as in medical or mains equipment."]},"ethics":{"considerations":["Small parts in critical circuits can decide whether a device is safe.","Electronic waste harms workers and environments where it is dumped."],"affectedParties":["Users of the equipment","Repair workers","Communities near e-waste sites"]},"owners":{"steward":"The owner of the device it sits in; the manufacturer answers for the part's rating.","roles":[],"masterSystems":[]},"relations":[{"target":"Q6867168","type":"parent","note":"registry parent class"},{"target":"passive electronic component","type":"related","note":"the category"},{"target":"Ohm law","type":"related","note":"ideally"},{"target":"voltage divider","type":"related","note":"a basic circuit"},{"target":"thermistor","type":"related","note":"a temperature-dependent form"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.resistor","Wikidata: Q5321 (https://www.wikidata.org/wiki/Q5321)","IEC 60062: marking codes colour and letter codes","E-series: IEC 60063 preferred values"]},"properties":{"applicability":"required","items":["common values: 1 ohm to 10 megohm range - E-series","power ratings: 0.05-100 W - typical, higher for power types"]},"recognition":{"applicability":"required","items":["Two-terminal component with defined resistance","Colour bands or printed codes","Thermistors, photoresistors and potentiometers are variable or sensing forms","A small cylindrical or rectangular component with two leads or terminals, often with colour bands, or a tiny chip on a circuit board."]},"capabilities":{"applicability":"required","items":["identify types and read markings","explain selection by resistance, tolerance and power","relay standards and series","distinguish related components"]},"hazards":{"applicability":"required","items":["Overheating and burnout above rated power","Drift with temperature and age","Misreading markings","Open circuit failure"]},"interfaces":{"applicability":"required","items":["IEC 60062 marking codes and IEC 60063 preferred values","IEC 60115 fixed resistor specifications","RoHS restrictions on materials"]},"context":{"applicability":"required","items":["Controlling current and voltage in circuits.","carbon composition and carbon film","metal film and metal oxide","wirewound and power resistors","thick and thin film chip resistors","variable resistors and potentiometers","sensing resistors: thermistors, resistance thermometers, photoresistors","special forms: zero-ohm links, bleeder resistors, liquid resistors"]}},"sources":[{"title":"Wikidata item Q5321: resistor","url":"https://www.wikidata.org/wiki/Q5321","note":"identity and sense of the item"},{"title":"Wikipedia: Resistor","url":"https://en.wikipedia.org/wiki/Resistor","note":"general description of the item"}],"openQuestions":["Should sensing resistors be separate entries?","How should standards be linked?","The registry entry has merged aliases naming sensing devices and special forms; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q5321/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q5321/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T21:40:43Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:52:00+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}