Physics-
General
Easy

Question

Three charges are placed at the vertex of an equilateral triangle as shown in figure. For what value ofblank Q, the electrostatic potential energy of the system is zero?

  1. negative q    
  2. fraction numerator q over denominator 2 end fraction    
  3. negative 2 q    
  4. fraction numerator negative q over denominator 2 end fraction    

The correct answer is: fraction numerator negative q over denominator 2 end fraction

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