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AP EAMCET202423 May 2024Morning ShiftPhysicsElectrostaticsActual

Two particles of charges 4 nC and Q are kept in air with a separation of 10 cm between them. If the electrostatic potential energy of the system is 1.8 ~J . Then Q =

Options

  1. A12 nC
  2. B9 nC
  3. C5 nC
  4. D7 nC

Correct answer

C. 5 nC

Step-by-step solution

aligned & U=1.8 J, r=10 ~cm & U= kQ ₁ Q₂ r & 1.8 10⁻⁶= 9 10^9 4 10⁻⁹ Q 10 10⁻² & Q=5 nC aligned

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