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![[Post New]](/templates/default/images/icon_minipost_new.gif) 4 Aug 2007 22:41:55 IST
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I did read in a book that when two bodies are rubbed together one of them loses elect. and gets +vely charged and other -vely charged .but why does a body having less work function has to lose elect.while rubbing and one with higher w gain elect. please explain !
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Small minds discuss people ,
Mediocre minds discuss events,
great minds discuss IDEAS. |
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5 Aug 2007 05:17:08 IST
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Here the point 2 note is that when 2 objects r rubbed, the substance that gains e- , always gains it & substane losing e- always lose it.
Now work function means the energy 2 b given 2 eject the electrons out of substances ( just like photoelectric effect).So, the substance having lesser W.F. loses e- easily.While the energy comes by rubbing. The problem is to take out elctron from lattice , not in giving it.When one loses e- , the other gains it & hence both bodies get charged.
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Next ISSAC NEWTON....
...student of NIT , allahabad...... |
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