InterviewSolution
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InterviewSolution
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The following series L-C-R circuit , when driven by an emf source of angular frequency 70 kilo-radians per second , the circuit effectively behaves like A. purely resistive circuitB. series R-L circuitC. series R-C circuitD. series L-C circuit with R = 0 |
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Answer» Correct Answer - B Resonance frequency, `underset(o)(omega)= 1/sqrt LC= 1/sqrt 100 xx 10^(-6) xx 1 xx 10^(-6) = 10^(5) rads^(-1)` Now, given `omega` = 70 kilo-`rads^(-1)` = `70000 rads^(-1)` `impliesunderset(o)(omega)gtomega` As `underset(L)(X ) propto omega` and `underset(C )(X)propto1/omega` `therefore` `underset(L)(X) gt underset(C )(X)` The circuit will be R-L circuit. |
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