Discussion :: Network Analysis and Synthesis
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The impedance of an RC series circuit is 12 Ω at f= 50 Hz. At f= 200 Hz, the impedance will be
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A.
more than 12
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B.
less than 3
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C.
more than 3 Ω but less than 12 Ω
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D.
more than 12 Ω but less than 24 Ω
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Answer : Option C
Explanation :
Z = R2 + XC2. When f is made four times, XC becomes one-fourth but R remains the same.
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