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Easy

Question

An equilateral triangle wire frame of side L having 3 point charges at its vertices is kept in x-y plane as shown. Component of electric field due to the configuration in z direction at (0, 0, L) is [origin is centroid of triangle]

  1. fraction numerator 9 square root of 3 k q over denominator 8 L to the power of 2 end exponent end fraction    
  2. zero    
  3. fraction numerator 9 k q over denominator 8 L to the power of 2 end exponent end fraction    
  4. None    

The correct answer is: zero

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