Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Capacitance and dielectrics

  1. Mar 10, 2009 #1
    I was getting ready for a test in my physics class and have a question that I cannot figure out. Why does adding a dielectric to a capacitor cause the amount of charge that can be stored to increase. I understand what a dielectric is and how a capacitor works but am just not sure why this works this way. Any help would be appreciated.
  2. jcsd
  3. Mar 10, 2009 #2
    When the dielectrics weakens the field by lining up it also creates an emf around the loop which helps in pulling the electrons.

    Its how a dipole always gets pulled towards both positive and negative charges since they just have to line up properly, and pulling/getting pulled is the same thing.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook