You'll create an electric current with a piece of fruit and watch the current move a compass needle. The citric acid in the lemon acts as the electrolyte for our lemon battery.
Electrodes are two different kinds of metals that can make electricity between each other.
Take your wire spool and wind it from top to bottom 100 times around the compass. You'll use this to see the effect of the electric current. Roll your lemon on a counter to get its inside juices flowing. 4.Insert your copper and zinc electrodes. They should not touch each other in the lemon.