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If 20 J of work has to be done to move an electric charge of 4 C from a point of potential 10 V to another point of potential V , then the value of V is

Options

  1. A20   V
  2. B30   V
  3. C5   V
  4. D15   V

Correct answer

D. 15   V

Step-by-step solution

The work done by the external agent is W e x t = q V 2 - V 1 ⇒ 20 = 4 ( V   –   10 ) ⇒ V = 15   V

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