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The potential of the electric field produced by point charge at any point ( x , y , z ) is given by V = 3 x 2 + 5 , where x , y are in metres and V is in volts. The intensity of the electric field at ( - 2 m , 1 m , 0 m ) is

Options

  1. A+ 17 V m - 1
  2. B- 17 V m - 1
  3. C+ 12 V m - 1
  4. D- 12 V m - 1

Correct answer

C. + 12 V m - 1

Step-by-step solution

Potential ( V ) = 3 x 2 + 5 Intensity of the electric field= -d V d x = 6 x ∴ E a t x = - 2 =- 6 ( - 2 ) =+ 12 V m - 1

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