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1) In an LRC circuit, why does the sum of the voltages around the circuit not equal the applied voltage as Kirchhoff's rule requires?

2) Using L = 20 mH, C = 50 μF and R = 15 ohms, calculate the resonant frequency of the series LRC circuit.

3) Use the values from question 2 and an applied voltage of 3.0 volts across the circuit, plot (on a separate sheet) the voltage across the resister as a function of frequency from 40 Hz to 240 Hz.

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