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![[Post New]](/templates/default/images/icon_minipost_new.gif) 31 Jul 2007 05:12:24 IST
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Why does some substances follow ohm's law while others don't??
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Next ISSAC NEWTON....
...student of NIT , allahabad...... |
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31 Jul 2007 12:06:01 IST
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ohm's law can be visualized as hook's law in strings. some materials follow it and others to a very limited extent.
the relationship bw E and J or V and I is a very complex one. for a general ohmic conductor in simple conditions the ohm's law is quiet acceptable
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31 Jul 2007 13:16:44 IST
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Ohms law is valid only when V is directly proportional to I i.e V=IR
In case when V is not directly proportional to I again we can use V=IR but only at a certain instant and we say that ohms law is not applicable
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~ANSHUMAN
I was born intellegent, education ruined me. |
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31 Jul 2007 14:14:00 IST
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hey, try reading the NCERT or any other refernce book, it would definitely be explained there(in a better way)...
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31 Jul 2007 15:34:55 IST
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buddy may b due to temp effect on material's prperties i thinnk.....
correct me if m wrong....
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