Capacitor with Dielectric

# 5C20.10

picture

Description Place two plates as close as you can without touching them. Slide them a little bit apart until you can clear see the deflecting of electroscope. Insert a dielectric between the plates, or take it away of the plates, what happened? Can you explain it?
Location 39E, 42G

 

picture

Description Compare the capacitance of the demounted capacitors which has small spacers between the two plates or a big piece of dielectric between the two plates. What is your conclusion?
Note Instead of using LCR meter, you can use electrometer which can be connected to a computer monitor.
Location 42G