Q.

A hollow cylinder has a charge q at it’s center. If φ is the electric flux associated with the curved surface B, the flux linked with the plane surface A will be:

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a

qε0ϕ

b

q2ε0

c

ϕ3

d

12(qε0ϕ)

answer is A.

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Detailed Solution

ϕtotal=ϕA+ϕB+ϕC=q0

Since ϕC=ϕA

Hence, ϕA=12(qε0ϕ)

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A hollow cylinder has a charge q at it’s center. If φ is the electric flux associated with the curved surface B, the flux linked with the plane surface A will be: