ORBIT ved www.systime.dkAC - resonance circuits


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The graph beneath shows the impedance Z as a function of frequency f for a series circuit of a resistor R, a coil L and a capacitor C. Use the sliders to control the values of R, L and C and use the select-boxes to change units. Start.

 

When the capacitor has a capacitance on C = 100 nF, what inductance L must the coil posess if the resonance frequency is to be 2 kHz?  (Answer).

Determine the impedance Z at the frequency f = 70 Hz, when R = 310 W, C = 3100 nF and L = 810 mH.  (Answer).

Why do we say that the impedance is pure ohmic at the resonance frequency?  (Answer).


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