Static Electricity
HyperPhysics

jenvan3.mov

 

A) Electricity of the Atom

Atoms are
 ordinarily neutral

 

#p = #e-

 

n has no charge

 

p has +1 charge

 

e- has -1 charge

 

 

Charge electron
 

-1.6 x 10-19 Coulombs
(Reference)

 

 

 

 

 

1. Atoms become charged by gaining or losing ...

 

 

Electrons

 

#24 - 3 Big Rules of Electrostatics


Opposites Attract




Likes Repel



 

Only Electrons Move

(Protons move, but don't leave nucleus)


 

 

Charge plates can deflect an electron

 

 

 

 

Mg+2   F -1

Mg atom
Lost 2 electrons

 

F  atom
gained 1 electron

20 p , 18 e-
What's the charge?

 

 

+ 2

 

 

 

 

Why are protons never lost or gained?

 

Protons are held in the nucleus by the strongest forces in the universe

 

 

 

a) Ion: electrically charged particle:

 

 

Charge is unbalanced

 

 

 

 negative charge

 

 

 

#e > #p

 

 

 

 

 

positive charge

 

 

#p > #e

 

 

 

 

 

 

"What is the

bottom prong of

 a plug called?"

 

"The bottom prong of
a plug called the ground.
It discharges any excess
charge that may develop
in an electrical device"

 

#25 - When grounded:

 

 

Negatively charged objects ...

 

 

... lose electrons

and become neutral.

 

 

Positively charged object ...

 

 

... gain electrons

and to become neutral.

 

 

Conserv. Charge

 

Tony Mangiacapre., -All Rights Reserved [Home] Established 1995 - Use any material on this site (w/ attribution)