GENERAL PHYSICS 2
Marilou P. Garcia
SHS Teacher
.
Lesson 1:
ELECTRIC CHARGE
What is Expected of You…..
 1. describe charging by rubbing and charging by induction using
ray diagram;
 2. explain the role of electron transfer in electrostatic charging by
rubbing; and
 3. describe experiments to show electrostatic charging by
induction.
When did the concept of electricity ND
Magnetism develop?
 15th century sir William Gilbert discovered properties loadstone and
amber

conducted a systematic study of static electricity
 1600 – De Magneto, introduced electric” to designate materials
behaving like amber, Amber, electron”
 THALES of MILETUS –
 Discovered the phenomenon called STATIC ELECTRICITY
 600 BC observed an amber (a fossilized material) attracted tiny particles of
wood when rubbed with wool
When did the concept of electricity and
Magnetism develop?
15th 1785 – discovery of Coulombs Law by Charles
Coulomb
1800 – invention of electric battery , Alessandro Volta
1820 – current deflect magnetic compass by Oersted in
1825 – discovery that current causes magnetic fields by
Ampere
1827 – discovery of electrical conduction

- current induced by magnetic fields by Faraday
When did the concept of electricity and
Magnetism develop?
1864 – Maxwell’s equations electromagnetism
1887 – electromagnetic waves by Hertz
1897 – electron by Thompson
Name of
Particle
Symbol
Charge
Value of Charge Mass in Kg
in Coulomb (C)
-
1.6 𝑥 10−19
9.11 𝑥 10−19
p
+
1.6 𝑥 10−19
1.6 𝑥 10−27
n
neutral
0
1.6 𝑥 10−27
electron
e
proton
neutron
ELECTROSTATIC/ Static
Electricity
A stationary electrical charge that is
built up on the surface of a material
deals with the interaction of electric
charge at rest.
ELECTRIC FORCE
Force that acts between electrical
charges
The process of supplying the electric
charge to an object or losing an
electric charge from an object is
called charging.
Electric charge is conserved. It can be
transferred from one object to another
by moving electrons but it can not be
created nor destroyed

.
Assignment:
ELECTRON AFFINITY?
Electroscope