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Two point charges +1 C and -1 C are placed at points (0,-0.1 ~m ) and (0,+0.1 ~m ) respectively in XY plane. Then, choose the correct statement/s from the following.

Options

  1. AThe electric field at all points on the Y axis has the same direction.
  2. BThe dipole moment is 0.2 C - m along +X axis direction.
  3. CNo work has to be done in bringing a test charge from infinity to the origin.
  4. DElectric field at all points on the X axis is along +Y axis.

Correct answer

D. Electric field at all points on the X axis is along +Y axis.

Step-by-step solution

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