CK-12-Physics-Concepts - Intermediate

16.1. Forces on Charged Objects http://www.ck12.org

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/63057

1. What happens to her hair when she touches a ground?


2. What happens to her hair when she steps off the platform?

This video shows the static charge from the Van de Graf generator.

http://www.youtube.com/watch?v=prgu6AvauuI

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/63059

This video demonstrates superconductivity that occurs at extremely low temperatures.

http://www.youtube.com/watch?v=nWTSzBWEsms

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/63061

Additional Practice Questions:

Questions

1. When a glass rod is rubbed with a silk cloth and the rod becomes positively charged,
   (a) electrons are removed from the rod.
   (b) protons are added to the silk.
   (c) protons are removed from the silk.
   (d) the silk remains neutral.


2. Electric charge is
   (a) found only in a conductor.
   (b) found only in insulators.
   (c) conserved.
   (d) not conserved.


3. When two objects are rubbed together and they become oppositely charged, they are said to be charge by
   (a) conduction.