Learn by building
Guided electrical experiments
Hands-on circuit exercises for students, with real DC simulation, expected observations and quick knowledge checks.
Available practicals
This first release includes three working DC practicals, not the complete four-year curriculum.
Basic electrical engineering
Build your first LED circuit
Practical exercise
Connect the 9 V battery, switch, 330 Ω resistor and LED in series. Run DC analysis. Change the resistance to 470 Ω and explain what happens.
Replaces the current workspace. Save or export your work first.
Expected observations
At 330 Ω, the approximate LED current is 21.08 mA. At 470 Ω, it drops to approximately 14.83 mA. The LED brightness responds to the solved current.
Knowledge check
Why is a series resistor needed?