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  • Question

  • Figure shows an RC potentiometer to measure ac voltage. It is desired that V0/Vi should be independent of frequency. The value of C should be
    Figure shows an RC potentiometer to measure ac voltage. It is desired that V0/Vi should be independe


  • Options
  • A. 10 ?F
  • B. 11 ?F
  • C. 0.1 ?F
  • D. 0.09 ?F

  • Correct Answer
  • 10 ?F 

    Explanation
    Since resistances are in the ratio of 10 : 1, capacitances should be in the ratio of 1 : 10 because XC ? 1/C.

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