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MHT CET202312 May 2023Evening ShiftPhysicsElectrostaticsActual

Three point charges +Q,+2 q and +q are placed at the vertices of a right angled isosceles triangle. The net electrostatic potential energy of the configuration is zero, if Q is equal to

Options

  1. A- 2 3 q
  2. B+ 2 3 q
  3. C- 3 2 q
  4. D+ 3 2 q

Correct answer

A. - 2 3 q

Step-by-step solution

Net electrostatic potential energy of the system is, aligned & U = 1 4 ₀ ( Qq a + 2 Qq a + 2 qq 2 a )=0 Q & +2 Q + 2 q 2 =0 3 Q & + 2 q =0 & Q = - 2 q 3 aligned

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