For the series R-C circuit in Fig. 1:
a. Determine the frequency at which XC = R.
b. Develop a mental image of the change in total impedance with frequency without resorting to a single calculation.
c. Find the total impedance at 100 Hz and 10 kHz, and compare your answer with the assumptions of part (b).
d. Plot the curve of VC versus frequency.
e. Find the phase angle of the total impedance at f = 40 kHz. Is the network resistive or capacitive at this frequency?
FIG. 1
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