1. ENGS2613 Intro Electrical Science Week 10
Read 6.3
Problems 6.2, 3, 10, 13, 17, & 21
100 point Exam #2 this Friday
One circuit problem (independent source & resistors)
One opamp problem (resistors)
One L or C problem
Understand Characteristics Integrate or Differentiate: Sine, Cosine, tα, e-αt
Something else
5 pt extra credit- simple circuit with dependent source
HKN Review Session 6 pm, Thursday, 30 March Physical Science 101
Quiz 5 Results (Version B +2) Hi = 15, Low = 1, Ave = 8.26, Deviation = 3.95

2. Inductors vs Capacitor
Inductor Short Circuit if DC in
v = L di/dt
i(t) - i(0-) = v dt L
Capacitor Open Circuit if DC in
i = C dv/dt
v(t) - v(0-) = i dt C ∫ t ∫ t
The resistance of resistors is independent of the electrical frequency input.
It's the same for DC input or rapidly varying electrical signal.
The resistance (technically called impedance) of inductors and capacitors is frequency dependent.

3. Inductors vs Capacitor
Inductor Short Circuit if DC in ↕ Open Circuit if Very Hi Freq in
v = L di/dt
i(t) - i(0-) = v dt L
Capacitor Open Circuit if DC in ↕ Short Circuit if Very Hi Freq in
i = C dv/dt
v(t) - v(0-) = i dt C ∫ t ∫ t
KCL, KVL, & Ohm's Law Still Apply
Note Reference Current Direction! + -
i → + -
i →