A pointed tip helps in the easy discharge of electric charge into the air due to the concentration of charge at the sharp end. This prevents the buildup of large charges, reducing the chances of a lightning strike on the building.
Related Questions:
- Rub a plastic ruler with your hair. Place it near running water from a tap. You see that the thin stream of water is deflected. Explain why.
- Two identical spheres have the same masses. Then we charge both of them so they are oppositely charged. After charging, will both bodies have the same mass or different masses? Explain.
- You take your car to a service station to get it polished. After a while, you observe that your car attracts dust. Why is dust attracted to the car?
- Take two oppositely charged rods, place them separately near small pieces of paper. Why do they both attract small pieces of paper? Is there any third type of charge on papers which attracts both positive and negative charges?
- A 100C charged body of mass 20 kg repels a 1C charged body of 10 g with a force of 2000N. Will the smaller charged body apply the same, smaller, or greater force on the 20 kg charged body?
- The force between two point charges is 10N. If their charge is doubled and the distance between them is reduced to half, what will be the magnitude of the force between them?
- Why is it dangerous for construction workers to hold a long steel pole upright during lightning weather conditions?
- According to the equation of capacitance of a capacitor, capacitance is numerically equal to the ratio between the charge stored on one of its plates and the potential difference between its plates. Does its value depend on the amount of charge and potential difference?
- Do two capacitors of different plate areas gain the same or different amounts of charge when connected to the same battery?
- A device has a capacitance of 250nC. You are asked to decrease its capacitance to 50nC. How can you get it by connecting another capacitor with it?
- Why does a charged balloon stick to a wall even though the wall is neutral?
- Why does a person feel a small electric shock after walking on a carpet and then touching a metal object?
- What happens to the force between two charges if the distance between them is tripled?
- Numerical Problems of chapter 13: Electrostatics
- Physics 10 MCQ
- Simple harmonic motion and waves
- Simple harmonic motion and waves-NFE
- Give an example of vibratory motion which is not simple harmonic motion. Give a reason for your selection.
- At the extreme position, velocity is zero but acceleration is maximum in simple harmonic motion. How can you theoretically explain it?
- What will happen to the acceleration of a mass-spring system if its mass is doubled?