Induction - Charging w/o contact

Conduction and Induction - St. Mary's H.S.

 

 

No charge is transferred

Electrons redistributed

 

 

Case II - Induction w/ Negative Rod

 

 

 

 

Frame 1 - Neutral Electroscope

 

 

#p = #e-

 

 

 

 

Frame 2 - Rod comes near

Compare #p with #e-

 

#p = #e-

 

Electroscope is neutral

 

Knob (top) Positive

Leaves - negative

 

Frame 3 - Rod Removed, Charges Return


Electroscope is neutral

 

Which diagram best represents the charge distribution on three neutral spheres when a positively charged rod is brought near sphere x, but does not touch it?

Jan. 2003 Regents

 

 

Choice 4 - Electrons are attracted to rod

 

Why does a charged balloon stick to a wall?

 

Which image is correct?

June 1996

 

 

 

Choice 3

 

 

What charge(s)
could this ball have?

 

 

 

 

 

Negative or Neutral