Electric Circuits II
Midterm Exam
Name: __________________________
Date: ____________________
Exam time: 3 Hours
Show all steps leading to the final answer, where applicable, for partial credit.
1. A certain sine wave has a frequency of 2 kHz and a peak value of V = 10 VP. Assuming a given cycle begins at t = 0 s (zero crossing).
a. What is the change in voltage from t1 = 0 µs to t2 = 125 µs.
2. Initially, the capacitors in the following circuit are uncharged. Calculate the following values.
a. After the switch is closed, how much charge is supplied by the source?
b. What is the voltage across each capacitor?
Diagram, schematic Description automatically generated
3. For the circuit shown below, calculate:
a. The total circuit current.
b. The branch currents through L2 and L3
c. The voltage across each inductor.
Diagram, schematic Description automatically generated
4. For the circuit shown below, perform the following tasks.
a. Find the circuit impedance in both rectangular and polar coordinates.
b. Find the total circuit current.
c. Draw the phasor diagram showing the circuit voltage and current and the phase angle.
Diagram, schematic Description automatically generated
5. For the circuit below, calculate the following:
a. Determine the circuit impedance.
b. Determine the total circuit current.
c. Find the voltage magnitude across each circuit element.
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