A horizontal wire 0.8 m long is falling at a speed of 5 m/s perpendicular to
a uniform magnetic field of 1.1 T, which is directed from east to west. Calculate
the magnitude of the induced emf. Is the north or south end of the wire positive?
一條物理電學題目
2008-02-15 10:23 pm
回答 (1)
2008-02-17 8:01 am
✔ 最佳答案
Induced e.m.f. ε = Blv = (1.1)(0.8)(5) = 4.4 VThe north end of the wire is positive. (can be deduced by Fleming's Left Hand Rule that the positive charges in the wire experience a force due north.)
收錄日期: 2021-04-23 12:41:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080215000051KK01628