Lesson: Dielectric Constant
In this lesson, we will learn how to calculate the capacitance of a capacitor given the dielectric constant of the material separating the capacitor plates.
Sample Question Videos
Worksheet: 6 Questions • 4 Videos
A voltmeter reads 45.0 V when placed across the capacitor. When a dielectric is inserted between the plates, completely filling the space, the voltmeter reads 11.5 V. What is the dielectric constant of the material?
What will the voltmeter read if the dielectric is now pulled out from between the capacitor plates so that dielectric material fills only one-third of the space between the plates?
Find the free charge on the capacitor plates.
Find the electrical field in the dielectric.
Find the induced charge on the dielectric’s surfaces.
What is the capacitance of the capacitor?
What charge is stored in the capacitor when a 9.0-V-potential difference is applied across it?