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An infinite long wire placed in one side of cube having side a and charge density lambda. Find flux through each surface |
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Answer» Electric field at distance r ⇒E= λ/2πrϵ0 Flux through Gaussian cylinder ϕ=E.2πrL ϕ= λL/ϵ0 According to question, If we set up 3 or more identical cube around it, to cover its area then we get flux equal to that of cylindrical Gaussian surface i.e. λL/ϵ0 But as we are covered with only 1/4 of area thus Flux would be = λL/4ϵ0 |
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