比如这个电路，希望能提供一个一般比较好判断的方法，被这个困扰很久了……
http://pic.wenwen.soso.com/p/20110320/20110320204621-668596157.jpg
怎样判断一个电路中电压表测的是哪两段的电压？
2011-03-26 3:03 pm
回答 (1)
2011-03-26 6:58 pm
✔ 最佳答案
One end of the voltmeter is connected to the +ve pole of the battery, and the other end to the -ve pole of the battery. Clearly, the voltmeter gives a reading equal to the emf of the battery (assume the battery has negligible internal resistance).
收錄日期: 2021-04-24 10:52:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110326000051KK00280