The document explains the principles of static electricity, detailing how charged particles interact through processes like rubbing materials together, resulting in electron transfer and charged bodies. It emphasizes that like charges repel while unlike charges attract, and provides a step-by-step guide on how to make an electroscope to demonstrate these principles. Additionally, it highlights that metals, as good conductors, do not retain static charge during rubbing.

1. Fousiya kFousiya k
Physical sciencePhysical science

2. Static electricity

3. Rub a plastic pen or scale on dry hair and bring it near
small piece of paper

4. Rub a plastic scale well against dry hair and bring it
near a thin stream of water flowing from the pipe

5. When certain
substances are rubbed
against each other
they are able to attract
other substances

6. How get the
ability to
attract

7. Matters are made up of atoms.
Atom consist of charged particles like
protons and electrons.
When particles are rubbed together
electrons in the outermost shells of atoms
of certain bodies give out and other body
receives these electrons.
The body that receives electron get –ve
charge and body gives out electrons get
+ve charge. Thus the body capable for
attracting other substances

8. Pair of bodies used for
rubbing and the electron
transfer between them
Charge received
Pair of bodies Electron transfer positive negative
Glass rod- silk Glass rod loses electron Glass rod silk
ebonite Wool loses electron wool ebonite
Rubber rod Wool loses electron wool Rubber rod

9. El ect ri f i cat i on:






10. Metals are good conductors, the charge
acquired by them spreads quickly to other
parts. so static electric charge is not formed
on metals

11. During rubbing
both the balloons
acquire the same
charge so the
balloons are
found to be
repelled each
other

12. like charges repel each other
 unlike charges attract each other
a charged body attract
uncharged bodies

14. HOW TO MAKE ANHOW TO MAKE AN
ELECTROSCOPE?ELECTROSCOPE?

15. Step 1 :
Get your
supplies
HOW TO MAKE AN ELECTROSCOPEHOW TO MAKE AN ELECTROSCOPE

16. step 2: Feed the
wire through the
hole in the
rubber stopper

17. step 3: Bend a couple
of closely spaced "U"
bends or loops in the
end of the wire that you
put through the hole.

18. step 4:Twist or
twirl the other end
of the wire to make
a stop to keep the
wire from falling
through.

19. Step 5:Carefully hook
the staples over the
"U" bends or loops so
that they hang freely

20. Step
6:Carefully
lower the whole
thing (stopper,
wire, and
staples) into
the glass flask.

21. Step 7: When a charged object (such as a balloon you
rubbed on your hair) is brought near to the exposed
end of the wire, the staples will swing away from
each other!