PhysicsAn electric field 3j^+4k^ N/C is present at a place. What will be the electric flux passing through a square plate of area 2m2 if the plate is placed in the y-z plane?

An electric field 3j^+4k^ N/C is present at a place. What will be the electric flux passing through a square plate of area 2m2 if the plate is placed in the y-z plane?

  1. A

    6 Nm2C-1

  2. B

    25 Nm2C-1

  3. C

    8 Nm2C-1

  4. D

    Zero

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    Solution:

    The electric field is present in the y-z plane. So, if we place a square surface in the y-z plane, the area vector of the plane will be perpendicular to the electric field and hence cos⁡θ becomes 0 as θ is 90 degrees. So, EA cosθ becomes zero i.e. no flux through the surface.

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