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// QUIZ LAB · 36 QUESTIONS · 3 LEVELS

Test your electronics level

Start at Beginner and power up. Every answer comes with a one-line explanation and the lesson that teaches it.

LEVEL 1 · 12 QUESTIONSBeginner

Volts, ohms, LEDs and the parts you meet first.

LEVEL 2 · 12 QUESTIONSIntermediate

Series, parallel, colour codes, RC timing and real numbers.

LEVEL 3 · 12 QUESTIONSAdvanced

Registers, bits, dB, reactance, inductors and power.

// PRACTICE FIRST

Try the Component Lab

All labs →
LAB · INTERACTIVEResistor colour codeTap the bands, read the value — then beat the decode challenge.LAB · INTERACTIVELED resistor designerPick a supply, an LED and a current — get the right resistor (and see what happens without one).LAB · INTERACTIVEOhm's law playgroundSlide the voltage and resistance, watch the current and power change live.