- Tardigrade
- Question
- Physics
- A capacitor is made of two circular plates of radius R each, separated by a distance d < < R. The capacitor is connected to a constant voltage. A thin conducting disc of radius r< < R and thickness t < < r is placed at the centre of the bottom plate. Find the minimum voltage required to lift the disc if the mass of the disc is m.
Q. A capacitor is made of two circular plates of radius each, separated by a distance . The capacitor is connected to a constant voltage. A thin conducting disc of radius and thickness is placed at the centre of the bottom plate. Find the minimum voltage required to lift the disc if the mass of the disc is .
Solution: