Voltage, Current & Resistance
Connect voltage, current, resistance and power using a live low-voltage circuit.
12 min · Worked example + virtual bench
Open lesson →← Electrical Studio
Turn Knowledge Into Skill · Free learning path
Electrical circuits, from explanation to experiment.
Understand the idea. Predict the result. Test it on a virtual bench.
Build confidence with six short lessons connecting voltage, current and components to practical systems. Each includes an original visual explanation, a worked example, adjustable circuit measurements and a challenge with feedback.
Beginner friendly · About 90 minutes · Basic arithmetic and algebra · No equipment or account needed
0 of 6 lessons completed · Progress stays in this browser.
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Series & Parallel Circuits
Switch between circuit topologies and see how current paths and voltage drops change.
15 min · Worked example + virtual bench
Open lesson →Voltage Dividers Under Load
Explore why a divider’s output changes when a measurement device or load is attached.
15 min · Worked example + virtual bench
Open lesson →Capacitors & RC Timing
Move through a charging or discharging curve and connect time constant to voltage and current.
15 min · Worked example + virtual bench
Open lesson →AC Impedance & Phase
Change frequency in a series RC circuit and compare normalized voltage and current waveforms.
18 min · Worked example + virtual bench
Open lesson →Find the Fault with Measurements
Compare normal, open, bypassed-load and high-resistance conditions using a safe circuit model.
15 min · Worked example + virtual bench
Open lesson →A practical way to learn
- Explain: connect the diagram to a physical idea.
- Predict: solve a small example before changing anything.
- Experiment: adjust components, compare meters and inspect a trace.
- Apply: solve a challenge and connect it to a real use case.
Ideal models make cause and effect visible. Each experiment identifies its assumptions; real components, power supplies and protection systems require more detailed models.
Ready to build your own circuit?
The guided benches focus on one concept at a time. The full Electronic Circuit Simulator provides a separate component-and-wire editor with DC and AC analysis.
Open full circuit simulator →Full simulator access follows its existing All-Access options. These six lessons and guided benches are free.
Original lessons and diagrams by EngineersUniverse. Further-reading references link to OpenStax. These browser experiments are educational and do not validate a real installation.
Updated