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(i) Draw the graphs showing variation of inductive reactance and capacitive reactance with frequency of applied a.c. source.(ii) Can the voltage drop across the inductor or the capacitor in a series LCR circuit be greater than the applied voltage of the a.c. source ? Justify your answer. |
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Answer» Solution :(i) N/A (ii) YES, voltage drop across the inductor or the capacitor in a series LCR circuit can be greater than the applied voltage of the a.c. SOURCE. It is because applied voltage is equal to phasor SUM (as obtained by use of a phasor diagram) of `V_(R), V_(L)` and `V_( c)` i.e. `V = I sqrt(R^(2) + (X_(L) -X_(C))^(2))` whereas `V_(L) = IX_(L)` and `V_(C) = IX_( C)` THUS, it is SELF -evident that `V_(L)` or `V_( c)` may be greater than V. |
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