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InterviewSolution
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When the rms voltages `V_(L), V_(C )` and `V_(R )` are measured respectively across the inductor `L`, the capacitor `C` and the resistor `R` in a series `LCR` circuit connected to an `AC` source, it is found that the ratio `V_(L) : V_(C ) : V_(R ) = 1 : 2 : 3`. If the rms voltage of the `AC` sources is `100 V`, the `V_(R )` is close to:A. `50 V`B. `70 V`C. `90 V`D. `100 V` |
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Answer» Correct Answer - 3 Given, `V_(L) : V_(C ) : V_(R ) = 1 : 2 : 3` `V = 100 V` `V_(R ) = ?` As we know, `V = sqrt(V_(R )^(2) + (V_(L) - V_(C ))^(2))` Solving we get, `V_(R ) = 90 V` |
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