天气预报15天查询> 其他> 判断电流方向用哪只手

判断电流方向用哪只手

更新时间: 2020-10-28 00:00:00     

判断电流方向用右手,伸开右手,使拇指与四指在同一平面内且跟四指垂直,让磁感线垂直穿入手心,使拇指指向导体运动方向,四指方向为感应电流方向。判断电流方向的原则也叫右手定则。

右手定则只适于判断闭合电路中部分导体做切割磁感线运动。右手定则判断感应电流的方向与楞次定律是一致的,但比楞次定律简单。

关键词: 判断 电流 方向

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-2083441/ | 耗时:0.1252 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2083441 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2083441 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2083441 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(3228710,3246828,637092,2400949,1130416,1043828,3328802,1112514,418142,612393,2948305,1127903,165771,1275228,128485,1474198,2963618,1559499,1385692,123783,3229246,900496,1369989,1103497,662204,2255886,1521674,164759,1096857,167761) ORDER BY field (ArticleID,3228710,3246828,637092,2400949,1130416,1043828,3328802,1112514,418142,612393,2948305,1127903,165771,1275228,128485,1474198,2963618,1559499,1385692,123783,3229246,900496,1369989,1103497,662204,2255886,1521674,164759,1096857,167761)