LEDs require more than 2 volts to light up.
Each Zinc-Copper Potato produces 1 volt. In this particular setup, we've created 3 - 1 Volt batteries connected in a series so that they can light up an LED.
Please see photos for directions.
Also see "Metal Reactivity Series" table to learn more.
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Step 1: What You Will Need
1 LED 2-3V
3 Idaho Potatoes
3 Copper Electrodes (5" x 3/4")
3 Zinc Electrodes (5" x 3/4")
4 Double Sided Alligator Clip Wires
Step 2: Connections
See photo for connection setup.
Note: The LED has a positive and negative so if your connection doesn't initially work, just switch the wire connection to the legs.
Step 3: Make Electricity!
Light & Dark Photos of the lit LED!
Step 4: Kit With Instructions
You can find the make electricity kit on ScienceKitStore.com