- #1
Nakis
- 3
- 0
Hi all,
I am sorry this could sound like heard many times before, but I am trying to understand this problem and found nothing in my physics books.
If I put a small dielectric (bit of paper) into an electrostatic field (for example generated by a rubbed plastic rod), the paper will be attracted. In theory, the electric field causes a polarization in the paper, which amounts to a surface charge... If the rod is positive, a negative charge will appear in the paper surface, resulting in an "upward" force. How can his force be calculated?
Furthermore, how does this work if I use two parallel conductor plates, put the paper on a plate and apply some potential? Here, ithe charges would be different on each side of the paper, so that it would never leave one surface to find some equilibrium position...
I know it's weird, but anyway thanks for any help !
-Nakis
I am sorry this could sound like heard many times before, but I am trying to understand this problem and found nothing in my physics books.
If I put a small dielectric (bit of paper) into an electrostatic field (for example generated by a rubbed plastic rod), the paper will be attracted. In theory, the electric field causes a polarization in the paper, which amounts to a surface charge... If the rod is positive, a negative charge will appear in the paper surface, resulting in an "upward" force. How can his force be calculated?
Furthermore, how does this work if I use two parallel conductor plates, put the paper on a plate and apply some potential? Here, ithe charges would be different on each side of the paper, so that it would never leave one surface to find some equilibrium position...
I know it's weird, but anyway thanks for any help !
-Nakis