Engineering
Circuits I
Train on Circuits I with 330 published problems. Preview a problem, explore the course outline, and work through one problem at a time.
Training
Try 5 problems free
Course and path
No account needed for these. The full course is 330 problems for $19 USD a month. What's included
A free account opens the first unit of every course, with hints and solutions.
Preview a course problem
See a problem from Circuits I before you begin.
Course topics
Course topics
Voltage, current, power, and resistive networks
Node, mesh, superposition, and equivalent circuits
Ideal operational-amplifier circuits
Capacitors, inductors, and first-order transients
Second-order natural and step responses
Phasors, sinusoidal steady state, and AC power
Practice problems
Try a few Circuits I problems, each with a hint.
- A charge q=50 μC is moved slowly from node n to node p Free with an accountVoltage, current, power, and resistive networks
- A connected resistive network has three essential nodes labelled A, B, and N Free with an accountVoltage, current, power, and resistive networks
- A network has essential nodes A, B, C, and reference node N Node, mesh, superposition, and equivalent circuits
- A connected planar circuit occupies two adjacent rectangular windows whose shared… Node, mesh, superposition, and equivalent circuits
- A linear one-port has terminals t and the reference node (ground) Ideal operational-amplifier circuits
- An ideal operational amplifier with supplies ±15.0 V (saturation at the rails) is… Ideal operational-amplifier circuits
- Capacitors C₁=20 μF and C₂=30 μF are connected in series Capacitors, inductors, and first-order transients
- A 40 μF capacitor is connected, for all t<0 and for a duration sufficient to reach DC… Capacitors, inductors, and first-order transients
- A source-free parallel circuit consists of R = 8 Ω, L = 2 H, and C = 1/32 F Second-order natural and step responses
- A three-phase source is balanced and positive-sequence Phasors, sinusoidal steady state, and AC power