How to measure the current-voltage characteristics of Ohmic conductors and superconductors

被引：0
|
作者：
Romano, Paola [1 ,2 ]
机构：
[1] Univ Sannio, Sci & Technol Dept, Via De Sanctis, I-82100 Benevento, Italy
[2] CNR SPIN, Univ Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy
来源：
EUROPEAN JOURNAL OF PHYSICS | 2024年 / 45卷 / 03期
关键词：
current; voltages; characteristics; Ohmic; conductors; superconductors;
D O I：
10.1088/1361-6404/ad3158
中图分类号：
G40 [教育学];
学科分类号：
040101 ; 120403 ;
摘要：
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 77 K.
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页数：8
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