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The potential of a uniformly charged line with density λ is given by,(a) ln(b/a). State True/False.(b) True(c) FalseThe question was asked during an interview.This interesting question is from Line Integral in chapter Vector Calculus of Electromagnetic Theory

Answer»

Correct CHOICE is (a) ln(b/a). State True/False.

The best I can explain: The ELECTRIC FIELD intensity is given by, E = λ/(2πεr)

Vab = -∫ E.dr = -∫ λ/(2πεr). On INTEGRATING from b to a, we get λ/(2πε) ln(b/a).



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