A constant current signal across a parallel RLC circuits gives an output of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ. At the frequency of 4KHZ, the output voltage will be
A. 1 v
B. 2 v
C. 1.4 v
D. 2.8 v
Answer: Option B
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Kindly suggest a valid formula for this
How????
1.4 volts are given on both sides of peak, so at peak, the voltages should be slightly more than the given.
so v>1.4.
I think 2.8 is double and not possible under the condition so 2v is correct.
explain
6 db point drop in both side in terms of voltage so it must be 2.8 volts
Why
how