#14 Reactance: General Features With regard to capacitors and inductors subject
ID: 306672 • Letter: #
Question
#14 Reactance: General Features With regard to capacitors and inductors subject to an AC voltage 0 A. Current lags voltage for inductors and voltage lags current for capacitors O B. Voltage lags current for inductors and current lags voltage for capacitors C. Current and voltage are in phase for capacitors and out of phase by 180° in the cace of inductors D. Current and voltage are in phase for inductors and out of phase by 180° in the case of capacitors #15 LC Resonance Phenomena A 3.41 ?F capacitor and a 0.254 H inductor are connected in series. What is the resonant frequency associated with the combination? Remember that w 1/VLC, but what we seek here is F = w/(27) 1/(2TVTC) O A. 87.3 hz B. 132 hz O C. 171 hz O D. 283 hz #16 LC Resonance Phenomena A 1.05 ?F capacitor and an inductor are connected in series. If the resonant frequency of the combination is 100 Mhz (Megahertz), what is the inductance of the inductor? A. 2.41 x 10-3 H O B. 2.41 x 10-6 H O C. 2.41 x 10-9 H D. 2.41 × 10-12 H #17 Impedance in a Series RLC Circuit A 120 ? resistor, a 50.0 ?F capacitor, and a 85.0 uH inductor is subject to an EMF with an angular frequency given by w 1.25 x 106 s. What is the value of the impedance Z of the RLC combination? Recall that z = VIP + (XL-Xc)2 where Xc = (wC)-1 and XL = wL ? A. 12012 O B. 140 ? ? C. 16012 ? D. 240 ?Explanation / Answer
15,
Given, C=3.41*10^-6, L=0.254 H
F=1/[2?*sqrt(LC)]
Plugging values,
F=1/[2?*sqrt(0.254*3.41*10^-6)]
F=171 Hz
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