• Support PF! Buy your school textbooks, materials and every day products Here!

Changes in Capacitance During Discharge of Parallel Plate Capacitor

  • #1

Homework Statement


I've been studying the changes in capacitance (presumably due to fringe capacitance) as a parallel plate capacitor discharges.

The data is entirely as I would expect, excluding the last few data points, which were taken at voltages less than two mV. The capacitance shows exponential decay until the roughly 2 mV point is reached; after this point, the capacitance increases rapidly.

Homework Equations


V = V(initial)*e^(t/RC)


The Attempt at a Solution



My primary speculation is that this anomaly is related to the resistor (5G ohm) and the low voltage.

Any suggestions would be appreciated.
 

Answers and Replies

Related Threads for: Changes in Capacitance During Discharge of Parallel Plate Capacitor

Replies
7
Views
2K
Replies
1
Views
417
Replies
3
Views
5K
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
3K
Top