天气预报 > 教育 > 电阻率公式
电阻率公式
更新时间: 2021-04-04 08:03:27  

1、R=ρL/S(R电阻、S截面积、L长度、ρ电阻率) 知识拓展: 电阻率(resistivity)是用来表示各种物质电阻特性的物理量。

2、可以看出,材料的电阻大小与材料的长度成正比,即在材料和横截面积不变时,长度越长,材料电阻越大:而与材料横截面积成反比,即在材料和长度不变时,横截面积越大,电阻越小。

关键词: 电阻 公式

电阻率公式相关经验

天气预报

最新推荐

页面:/news/view-2383662/ | 耗时:0.8637 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=2383662 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2383662 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2383662 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(946334,589709,986843,3400685,662712,685163,1204531,1126361,1129484,1155192,1533294,3218512,2776062,2151379,1632241,1914978,2087502,3485220,3528425,3311590,387128,1486621,1208160,463049,924009,1083886,1322551,1800350,867467,2667986) ORDER BY field (ArticleID,946334,589709,986843,3400685,662712,685163,1204531,1126361,1129484,1155192,1533294,3218512,2776062,2151379,1632241,1914978,2087502,3485220,3528425,3311590,387128,1486621,1208160,463049,924009,1083886,1322551,1800350,867467,2667986)