fig shows a series L-C-R circuit connected to a variable frequency and 200 V source. What is the source frequency which drives the circuit at resonance ?
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a
50 z
b
(50/π)Hz
c
25 Hz
d
(25/π)Hz
answer is D.
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Detailed Solution
The resonant frequency n is given byn=12πLC=12π5×80×10−6=502π=25πHz