PPT: Chemical Effects of Electric Current | Science Class 8 PDF Download

 Page 1


 Chemical Effects
of Electric
Current
Page 2


 Chemical Effects
of Electric
Current
Conduction of Electricity
DIRECTION OF
ELECTRIC CURRENT Conduction of Electricity
or Electrical Conduction
means electrically
charged particles moving
through a material.
This movement can
create an electric current
Page 3


 Chemical Effects
of Electric
Current
Conduction of Electricity
DIRECTION OF
ELECTRIC CURRENT Conduction of Electricity
or Electrical Conduction
means electrically
charged particles moving
through a material.
This movement can
create an electric current
Conductors vs Insulators
These materials allow
charges to flow freely.
These materials resist the
free movement of charges.
C o n d u c t o r s I n s u l a t o r s
silver
spoon
copper wire
rubber
balloon
rubber tire
diamond
Page 4


 Chemical Effects
of Electric
Current
Conduction of Electricity
DIRECTION OF
ELECTRIC CURRENT Conduction of Electricity
or Electrical Conduction
means electrically
charged particles moving
through a material.
This movement can
create an electric current
Conductors vs Insulators
These materials allow
charges to flow freely.
These materials resist the
free movement of charges.
C o n d u c t o r s I n s u l a t o r s
silver
spoon
copper wire
rubber
balloon
rubber tire
diamond
G o o d B a d
S i l v e r
S p o o n
R u b b e r
P a p e r
G o l d
Some substances allows electric
current to pass through them but in
very little amount. Therefore, such
substances called bad conductors
of electricity
Good Conductor vs Bad Conductor
Substances which allow
electric current to pass
through them easily are called
good conductors of electricity
Page 5


 Chemical Effects
of Electric
Current
Conduction of Electricity
DIRECTION OF
ELECTRIC CURRENT Conduction of Electricity
or Electrical Conduction
means electrically
charged particles moving
through a material.
This movement can
create an electric current
Conductors vs Insulators
These materials allow
charges to flow freely.
These materials resist the
free movement of charges.
C o n d u c t o r s I n s u l a t o r s
silver
spoon
copper wire
rubber
balloon
rubber tire
diamond
G o o d B a d
S i l v e r
S p o o n
R u b b e r
P a p e r
G o l d
Some substances allows electric
current to pass through them but in
very little amount. Therefore, such
substances called bad conductors
of electricity
Good Conductor vs Bad Conductor
Substances which allow
electric current to pass
through them easily are called
good conductors of electricity
Liquids with salt dissolved in them can
carry electricity. We can check this by
using two electrodes and a light bulb.
Do Liquids Conduct
Electricity?