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![[Post New]](/templates/default/images/icon_minipost_new.gif) 9 Nov 2007 01:01:30 IST
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please provide a good theory on rheostat along with a good diagram.
actually i do not usually find it possible to solve jee oriented questions using the theory given in some good books
please use ur own language
do not please copy paste it from wikipedia or something like that ok
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