Imagine a battery shorted with a very long conducting wire. Q : if the wire is uniform through out the loop, can i use V = E.dl directly (to know potential drop between two points) ? If yes, how can we extend the same concept to a loop containing few resistors in series ? I am stuck in Lec.9... pls help..

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use the fact that I=constant for different R 's so E will vary with R directly for all R's(resistors)..

not clear.. you mean loop length is constant ? and, equation V = E.dl doesnt say E varies with R... can you pls explain some more... ?

i quote "Q : if the wire is uniform through out the loop, can i use V = E.dl directly (to know potential drop between two points) ?" ans : yes because the resistance is uniformly distributed. for discrete resistances in series the voltage is distributed between the resistances as the conducting wire has negligible resistance.. |dw:1339526221153:dw| since same current through both the resistors,therefore the V around each is in inverse ratio of the resistance values of the resistors.

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