How to make a lemon battery light a LED bulb
How to make a lemon battery A lemon battery is made with lemon and two metallic such as copper and zinc. Copper and zinc work well…
Tag: identifying controlling variables
Diy resistor from lead pencil
Diy resistor from lead pencil Diy resistor from lead pencil ,This is a demonstration of variable resistance. The core of a lead pencil does n't…