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A plane surface of element of area 1 mm^...

A plane surface of element of area `1 mm^(2)` is situated in a uniform electric field of intensity `9xx10^(6)N//C` with its plane making an angle of `30^(@)` with the direction of the field. The electric flux through the surface element is

A

`4.5Nm^(2)//C`

B

`3.5Nm^(2)//C`

C

`0.5Nm^(2)//C`

D

`2.5Nm^(2)//C`

Text Solution

Verified by Experts

The correct Answer is:
A
`phi=dSE" ""as"" "theta=1xx10^(-6)xx9xx10^(6)xxcos60`
`=4.5Nm^(2)//C.`
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