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An electric field is given by ( 6 i ^ + 5 j ^ + 3 k ^ ) N C - 1 . The electric flux through a surface area 30 i ^ m 2 lying in YZ-plane(in SI unit) is:

Options

  1. A90
  2. B150
  3. C180
  4. D60

Correct answer

C. 180

Step-by-step solution

Given: E → = ( 6 i ^ + 5 j ^ + 3 k ^ ) N C - 1 A → = 30 i ^ m 2 ϕ = E → · A → ⇒ ϕ = ( 6 i ^ + 5 j ^ + 3 k ^ ) · ( 30 i ^ ) = 180 SI unit

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