-The center frequency of the circuit in Figure is approximately
A) 38 kHz.
B) 78 kHz.
C) 119 kHz.
D) 241 kHz.

Name: -The center frequency of the circuit in Figure is approximately A) 38 kHz. B) 78 kHz. C) 119 kHz. D) 241 kHz.
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Question

-The center frequency of the circuit in Figure is approximately
A) 38 kHz. 
B) 78 kHz. 
C) 119 kHz. 
D) 241 kHz.

Quizplus · Accepted Answer

The center frequency of a parallel resonant circuit is given by:$$f_0 = \frac{1}{2\pi\sqrt{LC}}$$In this case, L = 10 mH and C = 100 nF, so:$$f_0 = \frac{1}{2\pi\sqrt{(10 	ext{ mH})(100 	ext{ nF})}} = 38 	ext{ kHz}$$

-The Center Frequency of the Circuit in Figure Is Approximately