Network Analysis and Synthesis - ECE Questions and Answers

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In an R-C circuit, the impedance is 40 Ω at a frequency of 100 Hz. At 200 Hz the impedance should be

40 Ω

80 Ω

20 Ω

more than 20 Ω but less than 40 Ω

Answer : Option D

Explanation :

Since frequency is doubled, becomes one-fourth but R² remains the same.

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