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A Gaussian surface in the cylinder of cr...

A Gaussian surface in the cylinder of cross-section `pia^(2)` and length L is immersed in a uniform electric field E with the cylinder axis parallel to the field. The flux `phi` of the electric field through the closed surface is

A

`2 pia^(2)E`

B

`pia^(2)EL`

C

`pia^(2)(2+L) E`

D

zero

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The correct Answer is:
D
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