All labs
⚡
Electrical Engineering
Diodes & Current Limiting
The bench
Drag a part into a slot — or tap a part, then tap a slot.
Live readout
Current
0.0 mA
Across LED
0.0 V
No power source — drop the battery into a slot.
Challenge
M
May
Light the LED safely from the 9 V battery — aim for 10–20 mA. Pick the right part and dial in a resistor that gets you there.