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`E` denotes electric field in a uniform conductor, `I` corresponding current through it, `v_(d)` velocity of electrons and `P` denotes thermal power produced in the conductor, then which of the following graph is correct?A. B. C. D. |
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Answer» Correct Answer - a,b,d `upsilon_(d) = (eE)/(m) tau` i.e. `upsilon_(d)prop E` `P = (V^(2))/(R ) = ((E//d)^(2))/(R ) = (E^(2))/(d^(2)R)`, i.e. `P prop b E^(2)` But `E prop upsilon_(d)` so `P prop upsilon_(d)^(2)` `P = VI = I^(2) R`, i.e. `P prop I^(2)` |
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