An A.C.Circuit contains a resistor 'R' an inductor 'L' and a capacitor 'C' connected in series.When it is connected to an A.C generator of fixed output voltage and variable frequency the current in the circuit is found to be leading the applied voltage \pi/ 4 rad,when the frequency is .When the frequency of the generator increased to the current is found to be lagging behind the applied voltage by \pi/ 4 rad.The resonant frequency of the circuit is f _1'.When the frequency of the generator increased to ' f_2' the current is found to be lagging behind the applied voltage by π/ 4 rad.The resonant frequency of the circuit is f_2' the current is found to be lagging behind the applied voltage by π/ 4 rad.The resonant frequency of the circuit is f _1'.When the frequency of the generator increased to ' f_2' the current is found to be lagging behind the applied voltage by π/ 4 rad.The resonant frequency of the circuit is

AP and TS EAMCET Engineering 2020 Model Paper 2

Question : 83 of 160

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An A.C.Circuit contains a resistor 'R' an inductor 'L' and a capacitor 'C' connected in series.When it is connected to an A.C generator of fixed output voltage and variable frequency the current in the circuit is found to be leading the applied voltage

rad,when the frequency is ′f1′.When the frequency of the generator increased to ′f2′ the current is found to be lagging behind the applied voltage by

rad.The resonant frequency of the circuit is

f1f2
f1+f2
f1+f2
2
2f1f2
f1+f2
√f1f2

Validate

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