1. STATIC ELECTRICITY

2. Static Electricity: electrical charge confined to an object
Static Electricity: electrical charge confined to an object. This is created by friction. (lightning, rugs, clothes….)
Conductors – allow the flow of electrical charge( most metals: Cu, Al, Au, Ag,)
Insulators- Allows very little to no flow of electrical charge. ( non-metals-wood, glass, rubber)
Semiconductors- Can act as an insulator or a conductor. (Germanium-transistors, silicon-computer chips)

3. CHARGES Like charges repel while unlike charges attract.
Charges can exert a force over a distance.

4. CHARGES Number of electrons determines the charge on an object.
POSITIVE
NEGATIVE
NEUTRAL

5. UNIT OF CHARGE 1 ELECTRON= -1.6X10-19C 1 PROTON = +1.6X10-19C
1 COULOMB (C) = 6.25 X 1018elementary charges
1 ELECTRON= -1.6X10-19C
1 PROTON = +1.6X10-19C
1 NEUTRON = 0c

6. LIGHTNING
Friction in storm cloud causes a (-) charge to build at the base of the cloud.
The ground becomes (+) by induction.
(+) charge attracts (-) charge.
Cloud-cloud, Cloud-ground, Ground -cloud

7. 10, ,000 amps of current.
V= 50,000km/hr
T= 50,000 ˚F
this will cause thunder.
10, ,000 amps of current.
V= 50,000km/hr
T= 50,000 F this will cause thunder.

8. GROUNDING: DIRECTS EXCESS CHARGE TO THE GROUND

9. INDUCTION- CAUSING A CHARGE ON AN OBJECT BY PLACING IT IN A CHARGED FIELD
The wall is charged by induction.