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General
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Question

Three plates of common surface area A are connected as shown. The effective capacitance will be

  1. fraction numerator epsilon subscript 0 end subscript A over denominator d end fraction    
  2. fraction numerator 3 epsilon subscript 0 end subscript A over denominator d end fraction    
  3. fraction numerator 3 over denominator 2 end fraction fraction numerator epsilon subscript 0 end subscript A over denominator d end fraction    
  4. fraction numerator 2 epsilon subscript 0 end subscript A over denominator d end fraction    

The correct answer is: fraction numerator 2 epsilon subscript 0 end subscript A over denominator d end fraction

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