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79 Experiment 12 Resonance in LCR circuits Observations and results Part A: Series LCR Circuit. L = _______________________ mH C = _______________________ F. Table 1 R 1 = ___________ ± R 2 = ____________ ± R 3 = _______________ ± S.No Frequency ² (kHz) V R / V P 2 = V R / V P 2 = V R / V P 2 = 1 2 3 4 5 6 7 8 9 10 Part B: Parallel LCR Circuit L = _________________ mH C = _________________ F. Table 2 S.No Frequency ² (kHz) R 1 = ___________ ± R 2 = ____________ ± R 3 = _______________ ±

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80 V R / V P 2 = V R / V P 2 = V R / V P 2 = 1 2 3 4 5 6 7 8 9 10 Calculations and Results: 1. Plot the graph of frequency ( ) vs P (average power ) for series and
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Unformatted text preview: parallel cases. 2. Read off the resonant frequency C L 2 1 O & ± = by locating the maxima / minima in the graphs i). Resonance frequency for series LCR circuit =________________kHz ii) Resonance frequency for parallel LCR circuit =________________kHz iii). Calculate the value of resonance frequency =________________kHz Results : Estimated value of Q for series resonance from graph : (1) (2) (3) Calculated value of C L R 1 Q = = (1) (2) (3) % errors in Q (1) (2) (3) (One graph paper required)....
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