{"title":"如何测量欧姆导体和超导体的电流-电压特性","authors":"P. Romano","doi":"10.1088/1361-6404/ad3158","DOIUrl":null,"url":null,"abstract":"\n A comparison between two different techniques useful to measure the current-voltage (I-V) characteristics of conducting materials or devices will be presented, suitable for an undergraduate laboratory devoted to the electrical measurements. First, I-V curves of linear resistors with known nominal resistance are measured by using the simplest version of a DC method and an AC method, in order to settle the experimental procedure. Then, nonlinear I-V curves of a superconductor are measured with the same procedures at different temperatures down to 77K.","PeriodicalId":505733,"journal":{"name":"European Journal of Physics","volume":"41 20","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"How to measure the current-voltage characteristics of Ohmic conductors and superconductors\",\"authors\":\"P. Romano\",\"doi\":\"10.1088/1361-6404/ad3158\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n A comparison between two different techniques useful to measure the current-voltage (I-V) characteristics of conducting materials or devices will be presented, suitable for an undergraduate laboratory devoted to the electrical measurements. First, I-V curves of linear resistors with known nominal resistance are measured by using the simplest version of a DC method and an AC method, in order to settle the experimental procedure. Then, nonlinear I-V curves of a superconductor are measured with the same procedures at different temperatures down to 77K.\",\"PeriodicalId\":505733,\"journal\":{\"name\":\"European Journal of Physics\",\"volume\":\"41 20\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-03-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Journal of Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1088/1361-6404/ad3158\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/1361-6404/ad3158","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
How to measure the current-voltage characteristics of Ohmic conductors and superconductors
A comparison between two different techniques useful to measure the current-voltage (I-V) characteristics of conducting materials or devices will be presented, suitable for an undergraduate laboratory devoted to the electrical measurements. First, I-V curves of linear resistors with known nominal resistance are measured by using the simplest version of a DC method and an AC method, in order to settle the experimental procedure. Then, nonlinear I-V curves of a superconductor are measured with the same procedures at different temperatures down to 77K.
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