question_answer 29)

  To reduce the reasonant frequency in an LCR series circuit with a generator (a) the generator frequency should be reduced (b) another capacitor should be added in parallel to the first (c) the iron core of the inductor should be removed (d) dielectric in the capacitor should be removed

Answer:

  (b)Resonant frequency in an LCR series circuit is To reduce  ; c can be increased, by adding another capacitor in parallel to the first. Choice (b) is correct.