# Session 24- RC, LC & RLC Circuits ```Leader: Garrett Schieber
Course: Phys 222
Instructor: Dr. Al-Saqer
Supplemental Instruction
Date: 10/27/14
Iowa State University
1) A 7.60-nF capacitor is charged up to 13.0 V, then disconnected from the power supply and
connected in series through a coil. The period of oscillation of the circuit is then measured to
be 8.60&times;10−5 s. (Book 30.29)
a) Calculate the inductance of the coil.
Session 24: RL, LC &amp; RLC
Circuits
b) Calculate the maximum charge on the capacitor.
c) Calculate the total energy of the circuit.
d) Calculate the maximum current in the circuit.
2) A capacitance C = 3.60 μF and an inductance L = 5.10 mH are operated at the same angular
frequency. What is the reactance of each element? (Book 31.6)
3) A 150-ohm resistor is connected in series with a 0.250-H inductor. The voltage across
the resistor is: (Book 31.13)
3a. Which of the following is the correct equation for the current in this circuit?:
3b. Determine the inductive reactance of the inductor.
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu
4) You have a 210-ohm resistor and a 0.410-H inductor. Suppose you take the resistor and
inductor and make a series circuit with a voltage source that has a voltage amplitude of 31.0
V and an angular frequency of 260 rad/s. (Book 31.14)
a) What is the impedance of the circuit?
b) what is the current amplitude?
c) What is the voltage amplitude across the resistor?
d) What is the voltage amplitudes across the inductor?
e) Does the source voltage lag or lead the current?
f) Draw the phasor diagram
```