Question

An alternating current circuit is in resonance at 10 kHz frequency. If frequency increases to 12 kHz, then what will be effect on impedance?
(a) remains unchanged
(b) increases 1.2 times
(c) increases and becomes capacitive
(d) increases and becomes inductive

Answer 1

(d) increases and becomes inductive
In the condition of resonance Z = R, so impedance is not dependent on the frequency.