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As shown in figure below, a charge +2 C is situated at the origin O and another charge +5 C is on the x -axis at the point A . The later charge from the point A is then brought to a point B on the y -axis. The work done is ( . given . 1 4 ₀ =9 10⁹ m / F )

Options

  1. A45 10⁹ J
  2. B90 10⁹ J
  3. Czero
  4. D-45 10⁹ J

Correct answer

C. zero

Step-by-step solution

Work done =U_ f -U_ i = 1 4 ₀ 2 5 ( 1 2 - 1 2 )=0

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