Interactive labs
Slide the parts and watch the circuit respond.
Visual experiments for Ohm's Law, RC timing, coils, speaker crossovers, solar runtime, and radio wavelength. Built for low-voltage learning and quick intuition.
Safety first, always.
ElectroLab AI teaches theory, low-voltage electronics, and planning concepts. Mains voltage, switchboards, fixed wiring, high-current systems, and legal electrical work must only be performed by licensed electricians where required.
Open Safety CenterInteractive lab bench
Ohm's Law
See current, resistor heat, and LED brightness change live.
Bench challenge
Try to land the LED current between 10 mA and 20 mA without pushing resistor power too high.
Change one slider at a time. Say what you expect to happen before you move it, then check the numbers.
Visual schematic
LED current path
Battery voltage pushes current through the resistor, then the LED. The resistor is the part saving the LED.
TP1: supply voltage
TP2: resistor drop
TP3: LED polarity
LED brightness model
Around 10 mA to 20 mA is a common bench LED target. This is a visual guide, not a part datasheet.
Next hands-on step