Dielectric Constant

  • #1
JordanHood
9
0

Homework Statement


A parallel plate capacitor has a capacitance of 1.5µF with air between the plates. The capacitor is connected a 12V battery and charged. The battery is then removed. When a dielectric is placed between the plates, a potential difference of 5.0V is measured across the plates. What is the dielectric constant of the material?

Homework Equations




The Attempt at a Solution


I know that Q=CV. however this is the only equation I find relevant as all the other equations I know for finding the dielectric constant involve area and distance between the plates. Can someone just help me get started with this question?
 

Answers and Replies

  • #2
cnh1995
Homework Helper
Gold Member
3,467
1,162
Inserting a dielectric will increase the capacitance but charge on the the plates will be same. Can you write an equation with this information and find the new capacitance? Comparing the two capacitances, you can calculate the dielectric constant of the new capacitor.
 

Suggested for: Dielectric Constant

Replies
78
Views
2K
Replies
6
Views
479
Replies
2
Views
208
Replies
2
Views
211
Replies
8
Views
490
Replies
1
Views
130
Replies
8
Views
430
  • Last Post
Replies
14
Views
495
Replies
2
Views
721
Top