A constant current signal across a parallel RLC circuits gives an o/p of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ .At the frequency of 4KHZ,the o/p voltage will be___________?
Correct answer: B. 2v
- A. 1 v
- B. 2v
- C. 1.4v
- D. 2.8v
Explanation
The two stated frequencies are the half-power frequencies around the 4 kHz resonance, where the voltage is 1.4 V. At parallel resonance the voltage is √2 times this value, approximately 2 V.
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