(AC Circuits and Resonance) 1. Is the plot of current versus frequency symmetric

Question

(AC Circuits and Resonance)

1. Is the plot of current versus frequency symmetrical about the resonant frequency?
Explain. (Is the Current versus frequency means current is on Y axis and frequency is on X axis?)


2. At resonance, the reluctance of the inductor and capacitor cancel each other so that the impedance (Z) is equal to just the resistance (R). Calculate the resistance of the circuit by using the amplitude of the current at resonance in the equation R= V/I
(Where V is the amplitude of the applied voltage). Is this resistance equal to 10 ohms? Why not?
(For this experiment L = 33.5mH, C = 100 micro F, R = 10 ohms were used)

Explanation / Answer

Yes the plot of current versus frequency is symmetrical about the resonant frequency. This is because the two are proportional about the resonant frequency, so any deviance will be mirrored across the resonant frequency axis, forming a distinct oval shape.

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