The graph shows variation of I with \( \mathrm{f} \) for a series P...

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The graph shows variation of I with \( \mathrm{f} \) for a series
P R-L-C network. Keeping \( \mathrm{L} \) and \( \mathrm{C} \) constant. If \( \mathrm{R} \)

W decreases :
(I) Maximum current \( \left(\mathrm{I}_{\mathrm{m}}\right) \) increases
(II) Sharpness of the graph increases
(III) Quality factor increases
(IV) Band width increases
(1) I, II, III
(2) II, III, IV
(3) III, IV, I
(4) All
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