• question_answer An uniformly charged infinite long wire carries linear charge density$\lambda .$ The electric field at point P is A) $\frac{\lambda }{4\pi {{\in }_{0}}d}$                     B) $\frac{\lambda }{2\pi {{\in }_{0}}d}$ C) $\frac{\lambda }{\pi {{\in }_{0}}d}$                       D)  can't be found

Solution :

For infinite long wire, the electric field at a point distant d from it is given by, $E=\frac{\lambda }{2\pi {{\in }_{0}}d}$

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