Question
4. Impedance [20 points] a) For the circuit in Figure 5, calculate the magnitude of the total impedance, Zel, seen by the source. b) Calculate the equation for the current through the source as a function of time. Note: This is the current that the voltage source must supply to maintain the specified voltage. 0.4 mF 10 30 mH ww m (t) =10cos (300t + v Figure 5. Circuit for Problem 4 5. Impedance [20 points] a. For the circuit in Figure 6, determine the voltage VRC as a phas or in angle form. + Vac- www HH 10 -150 =32-20° A 150 (100) Figure 6. Circuit for Problem 5 b. Does the voltage calculated in part (a) lead or lag source current? How do you know? c. Determine the current I, in as a phasor in angle form. Hint: The current divider equation from lecture 2 can be helpful for this calculation.
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