关于电荷的中学物理问题(英文表述),A negatively charged polyethene rod is brought near an insulated conductor without touching it.Which diagram correctly shows the distribution of charges?大概是问带负电的带电体靠近金属
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![关于电荷的中学物理问题(英文表述),A negatively charged polyethene rod is brought near an insulated conductor without touching it.Which diagram correctly shows the distribution of charges?大概是问带负电的带电体靠近金属](/uploads/image/z/6566664-48-4.jpg?t=%E5%85%B3%E4%BA%8E%E7%94%B5%E8%8D%B7%E7%9A%84%E4%B8%AD%E5%AD%A6%E7%89%A9%E7%90%86%E9%97%AE%E9%A2%98%EF%BC%88%E8%8B%B1%E6%96%87%E8%A1%A8%E8%BF%B0%EF%BC%89%2CA+negatively+charged+polyethene+rod+is+brought+near+an+insulated+conductor+without+touching+it.Which+diagram+correctly+shows+the+distribution+of+charges%3F%E5%A4%A7%E6%A6%82%E6%98%AF%E9%97%AE%E5%B8%A6%E8%B4%9F%E7%94%B5%E7%9A%84%E5%B8%A6%E7%94%B5%E4%BD%93%E9%9D%A0%E8%BF%91%E9%87%91%E5%B1%9E)
关于电荷的中学物理问题(英文表述),A negatively charged polyethene rod is brought near an insulated conductor without touching it.Which diagram correctly shows the distribution of charges?大概是问带负电的带电体靠近金属
关于电荷的中学物理问题(英文表述),
A negatively charged polyethene rod is brought near an insulated conductor without touching it.Which diagram correctly shows the distribution of charges?
大概是问带负电的带电体靠近金属小球时的情况把.我有正确答案,只是不知道为什么,
关于电荷的中学物理问题(英文表述),A negatively charged polyethene rod is brought near an insulated conductor without touching it.Which diagram correctly shows the distribution of charges?大概是问带负电的带电体靠近金属
题目意思理解了.就是图看的不是特清楚.
【选A】
带负电的rod靠近孤立的conductor时,由于电荷之间的相互作用,会把正电荷吸引至靠近Rod的这端,且离rod越近,电荷密度越大.
又由于这个conductor是孤立的(也就不能与外界交换电荷)所以它的总电荷是守恒的,因此在正电荷被吸引至靠近rod的一边时,等量的负电荷会被排斥到另一边.
该题还有一个变种,如果conductor接地,那么在conductor上就都是正电荷了.因为负电荷都流入大地了.
中学就做英文的习题啊~后生可畏啊
同名电荷相斥,异名电荷相吸,而已