1:1  11-30[物理] 牛老师教你正确理解欧姆定律及其变形公式
推荐理由：正确理解欧姆定律及其变形公式，强化影响电阻大小的因素。 讲解人：http://www.jiandan100.cn/teacher/2f16e597c5fe4158837c16674ddc3a86/ ，北京市高级教师，市级骨干教师，2008年北京市中考物理命题教师 题面：对于公式R=U/I，下列说法正确的是（ ） A．导体中的电流越大，则电阻越大 B．加在导体两端的电压越大，则电阻越大 C．导体的电阻与电压成正比，与电流成反比 D．导体的电阻等于导体两端的电压与通过导体的电流之比 【答案及详解】 本部分内容设定了隐藏,需要回复后才能看到
 跟帖分享你的答案，即可看到正确答案和解析！别忘了回帖后再点进来查看答案哦~同学们，你们掌握欧姆定律及其变形公式了吗？ ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 查看更多本年级每周一题，请点击：http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=380& 浏览本期“简单学习电子周报”完整目录：http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=653784 |
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