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The value of electric potential at a distance of 9 cm from the point charge 4 10⁻⁷ C is [ . Given . 1 4 ₀ =9 10^9 ~N ~m ^2 C ⁻² ] :

Options

  1. A4 10^2 V
  2. B44.4 V
  3. C4.4 10^5 ~V
  4. D4 10^4 ~V

Correct answer

D. 4 10^4 ~V

Step-by-step solution

V= k q r =9 10^9 4 10⁻⁷ 9 10⁻² =4 10^4 ~V

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