SME
College · Engineering
Circuit Analysis I
5 topics
Electrical
Before this course
Topics
Ohm's and Kirchhoff's laws
Main lesson
Two resistors in parallel
Use this for “A 6 Ω and a 3 Ω resistor are in parallel across 12 V. Find each current.”
Series-parallel reduction
Use this for “R₁ = 4 Ω is in series with 6 Ω ∥ 12 Ω across 24 V. Find the total resistance and every current.”
Power absorbed or delivered
Use this for “An element has 5 V across it and −2 A into its + terminal. Does it absorb or deliver power?”
Node and mesh analysis
Thévenin and Norton equivalents
Main lesson
Norton equivalent
Use this for “Turn an 8 V, 2 Ω Thévenin equivalent into its Norton form.”
Maximum power transfer
Use this for “An 8 V, 2 Ω Thévenin source drives a 6 Ω load. What power does the load take, and what is the most any load can take?”
Superposition of two sources
Use this for “A 12 V source through 3 Ω and a 3 A current source feed one node, with 6 Ω to ground. Find the node voltage by superposition.”
Op-amps
Main lesson
Non-inverting amplifier
Use this for “A non-inverting amplifier has Rg = 10 kΩ and Rf = 30 kΩ. Find its gain and output for 0.5 V in.”
Summing amplifier
Use this for “A summing amplifier has every resistor 10 kΩ. Find vₒᵤₜ for inputs of 1 V and 2 V.”
Difference amplifier
Use this for “A difference amplifier has R₁ = 10 kΩ and R₂ = 50 kΩ. Find vₒᵤₜ for v₂ = 1.2 V and v₁ = 1 V.”
RC and RL transients
Main lesson
Discharging a capacitor
Use this for “A 50 μF capacitor charged to 9 V discharges through 2 kΩ. How long until it reads 3 V?”
Current in an RL circuit
Use this for “A 2 H coil and a 4 Ω resistor are switched onto 12 V. Find the current after 1 s.”
Switching from a nonzero start
Use this for “A capacitor voltage starts at 2 V and heads for 10 V with τ = 0.5 ms. Find it at 1 ms.”
Damping of a series RLC circuit
Use this for “A series RLC has 10 Ω, 1 mH and 10 μF. Is it over-, under- or critically damped?”
Course test
See what you know: 10 questions on this course
New questions each time. Pass to mark it complete.