Posted by **physics help** on Monday, December 14, 2009 at 4:47pm.

Energy of a Capacitor in the Presence of a Dielectric

A dielectric-filled parallel-plate capacitor has plate area A = 30.0 cm^2, plate separation d = 10.0 mm and dielectric constant k = 5.00. The capacitor is connected to a battery that creates a constant voltage V = 7.50 V. Throughout the problem, use epsilon_0 = 8.85×10−12 C^2/N*m^2.

1)Find the energy U_1 of the dielectric-filled capacitor. (Find U_1)

2)The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy U_2 of the capacitor at the moment when the capacitor is half-filled with the dielectric. (Find U_2)

3)The capacitor is now disconnected from the battery, and the dielectric plate is slowly removed the rest of the way out of the capacitor. Find the new energy of the capacitor, U_3

4)n the process of removing the remaining portion of the dielectric from the disconnected capacitor, how much work W is done by the external agent acting on the dielectric?

## Answer this Question

## Related Questions

- Physics: Dielectric Constant - A parallel plate capacitor has a capacitance of 9...
- UOS - A parallel plate capacitor has a capacitance of 7.0mF when filled with a ...
- physic - A dielectric-filled parallel-plate capacitor has plate area A = 10.0cm2...
- physics - a) Determine the capacitance, in pF, of a paper-filled parallel-plate ...
- Physics - A certain substance has a dielectric constant of 2.8 and a dielectric ...
- science - two parallel plates are separated by a dielectric of thickness 2mm and...
- Physics - A parallel-plate capacitor is constructed with circular plates of ...
- physics - Determine the capacitance, in pF, of a paper-filled parallel-plate ...
- Physics - If the electric field inside a capacitor exceeds the dielectric ...
- Physics: Manitude of Surface Charge on Dielectric - An empty capacitor has a ...

More Related Questions