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Q.

A long charged wire is kept on +y axis, with one end at origin. Its linear charge density is given as λ=λ0 y. Calculate electric flux passing through the cylinder

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a

λ0L2ϵ0

b

λ0L22ϵ0

c

2λ0Lϵ0

d

2λ0L2ϵ0

answer is B.

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Detailed Solution

Charge enclosed =q=∫0L λdy

∫0L λ0ydy=λ0L22

So, ϕe=λ0L22ϵ0

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