Physics-
General
Easy

Question

The equivalent capacitance between the points A a n d B in the following circuit is

  1. 1 mu F    
  2. 2 mu F    
  3. 4 mu F    
  4. 8 mu F    

The correct answer is: 1 mu F


    The two capacitors each of value 1.5mu F are in parallel. So, their equivalent capacitance

    Now, three capacitors each of value 3 mu F are in series. Hence, their equivalent capacitance is given by
    fraction numerator 1 over denominator C end fraction equals fraction numerator 1 over denominator 3 end fraction plus fraction numerator 1 over denominator 3 end fraction plus fraction numerator 1 over denominator 3 end fraction
    or fraction numerator 1 over denominator C end fraction blank equals fraction numerator 3 over denominator 3 end fraction
    or c equals 1 mu F

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