Physics-
General
Easy

Question

The equivalent capacitance of the combination of the capacitors is

  1. 3.20 mu F    
  2. 7.80 mu F    
  3. 3.90 mu F    
  4. 2.16 mu F    

The correct answer is: 3.20 mu F


    The 10mu F and 6mu F capacitors are connected in parallel, hence resultant capacitance is
    C to the power of ´ end exponent equals 10 blank mu F plus 6 blank mu F equals 16 blank mu F blank
    This is connected in series with 4mu F blankcapacitor, hence effective capacitance is
    fraction numerator 1 over denominator C ´ ´ end fraction equals fraction numerator 1 over denominator 16 end fraction plus fraction numerator 1 over denominator 4 end fraction equals fraction numerator 20 over denominator 16 cross times 4 end fraction
    rightwards double arrow blank C to the power of ´ ´ end exponent equals fraction numerator 64 over denominator 20 end fraction equals 3.20 mu F

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