Static Electricity
Static electricity is a fascinating phenomenon that occurs when electric charges build up on the surface of an object. Unlike current electricity, which flows continuously, static electricity remains stationary until it is discharged. It manifests in everyday occurrences, such as the cling of clothing, the crackle of a doorknob, or the spark from shuffling across a carpet. Understanding static electricity is crucial in various fields, from electronics to industrial processes. Its study sheds light on fundamental principles of charge interactions and is integral to innovations in technology and everyday conveniences.
Questions
- How does static electricity change the charges of an object?
- How does static electricity form?
- What happens when you bring a negatively charged object close to a neutral pith ball?
- If two pieces of ebonite are rubbed with fur, how will they react toward each other?
- Why can you safely handle a 1.5-V battery without being electrocuted?
- What is an #"ebonite rod"# ?
- What does electron affinity measure?
- How does static friction differ from kinetic friction?
- Physicists talk about the electron in a hydrogen atom being in an “energy well”. Explain why the difference in energy, ∆E, is negative. What does a negative ∆E represent?
- How does friction work in static electricity?
- How does static electricity affect hair?
- Why does a plastic ruler rubbed on hair loses electrons and gets a positive charge?
- What are the properties of static electricity?
- Can static electricity and electric current occur simultaneously in the same object?
- How do static electricity and electric discharge differ?
- Wires carrying AC current do not get heated up . Why ?
- A lithium-ion battery for a mobile phone has a self discharge rate of 4% per month. What would be discharged after one month for a battery rated at 1.8 V and 500 mAh?
- List two common uses of static electricity and explain how they work?
- What effects does lightning have on the atmosphere?
- Why does a strip of polyethylene have a negative charge after it is rubbed with a piece of silk cloth?