1What is static electricity? Mention three ordinary effects of it.
2Why is a chain or wire kept hanging from a fuel carrying truck down to the ground?
3What is earthing, and why does it prevent sparks?
4Write any four uses of static electricity in daily life.
5Explain how a photocopy machine uses static electricity.
6Why does a charged paint sprayer waste less paint than an ordinary one?
7How does a static air filter differ from an ordinary cloth or paper filter?
8Why does a television screen collect more dust than a wooden table in the same room?
9Explain why static electricity is called neither useful nor harmful in itself.
10A charged comb loses its charge at once when it touches a metal tap, but not when it touches a wooden door. Explain.