Measurements and Instrumentation - ECE Questions and Answers

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

10 μF

11 μF

0.1 μF

0.09 μF

Answer : Option A

Explanation :

Since resistances are in the ratio of 10 : 1, capacitances should be in the ratio of 1 : 10 because X_C ∝ 1/C.

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