Physics electric charge

1. ELECTRICITY

2. LEARNING OBJECTIVES
1.Discuss the contributions of the
different scientist in the field of
electricity ;
2.Describe the nature of charges ;
3.Explain the origin of charges ;
4.Appreciate the concepts of
electrostatics that contributed to
the understanding of electricity .
VALUES
Demonstrate calmness
during thunderstorms
Display safety
consciousness when
dealing with static
electricity
Appreciate the role of
science , especially
electrostatics in
everyday life
LESSON 1.1 – ELECTRIC CHARGE

3. NOTABLE CONTRIBUTIONS TO THE STUDY
OF ELECTRICITY
THALES OF MILETUS
First to discover
an effect of
electrostatics
WILLIAM GILBERT
Discovered that there
are other materials
that could act like
amber.
BENJAMIN FRANKLIN
Discovered that there are
2 electrical charges ,
positive and neagtive

4. NOTABLE CONTRIBUTIONS TO
THE STUDY OF ELECTRICITY
CHARLES AGUSTINE
DE COULOMB
Formulated Coulombs
law of electrostatics
GEORGE SIMON
OHMS
Discovered the relationship
between the 3 electrical
quantities ; CURRENT ,
VOLTAGE AND
RESISTANCE
ALEXANDER VOLTA
He invented the
battery.

5. NOTABLE CONTRIBUTIONS TO
THE STUDY OF ELECTRICITY
Invented the ff :
a. two-way television telephone
b. electrical kinetic resistance
known as the Zara effect,
c. airplane engine using alcohol
as fuel which was first flown
at the Manila International
Airport on September 30, 1954
and solar energy.
GREGORIA ZARA

7. LESSON 1.1 – ELECTRIC CHARGE
KEY TERMS
ELECTROSTATICS stands for electricity at rest.
ATOMS = the basic unit of matter
PROTONS = subatomic particle which combines with electron and neutron to make
an atoms
NEUTRONS = subatomic particle contained in the nucleus
ELECTRONS = subatomic particle that orbits the nucleus of an atom

8. LESSON 1.1 – ELECTRIC CHARGE
KEY TERMS
ELECTRIC CHARGE determines the electric interaction and magnetic interaction
between subatomic particles and other charged particles.
= represented by “q”
ION - an atom that has an imbalance in the number of protons and electrons
CATIONS are positive ( more protons than electrons
ANIONS are negative ( more electrons than protons
COULOMBS = SI unit for electric charge
1 e = 1.602 x10 ^ - 19 C

9. LESSON 1.1 – ELECTRIC CHARGE
LESSON TAKE AWAYS
1. Thales of Miletus , William Gilbert , Benjamin Franklin , Charles Augustine de
Coulomb , George Simon Ohms, Alexander Volta , AND Gregorio Zara were the
scientist who contributed in the field of electricity.
2. Electrostatics is observed because of the electrical nature of matter .
3. A body acquires a charge when gaining/losing an electron happened.
4. When a body acquires an electric charge it is now capable of exerting a force on
another body placed near it.

10. LESSON 1.1 – ELECTRIC CHARGE
LESSON TAKE AWAYS
5. 3 LAWS OF EELCTROSTATICS
a . There are 2 electrical charges , POSITIVE AND NEGATIVE
b. . LIKE CHARGES REPEL EACH OTHER AND UNLIKE CHARGES
ATTRACT EACH OTHER.
c. Electrical Charges are capable of exerting a force , either force
of attraction or force of repulsion

11. LESSON 1.1 – ELECTRIC CHARGE
LESSON TAKE AWAYS
PROPERTIES OF PROTON , NEUTRON AND ELECTRON
SUB ATOMIC
PARTICLE
LOCATION MASS CHARGE
PROTON Inside the
nucleus
1.673 x 10 ^ - 27 kg 1.602 x10 ^ - 19 C
NEUTRON Inside the
nucleus
1.675 x 10 ^ - 27 kg 0
ELECTRON Around the
nucleus
9.109 x 10 ^ - 31 kg - 1.602 x10 ^ - 19 C

12. Opposite charges in an atom
attract each other. If the
positive of an atom outnumber
the negative charges, the atom
is a positive ion . If there are
more negative charges than
positive charges in an tom ,
the atom is a negative ion.

13. 1.What are your opposing characteristics or traits ?
2.How can you use these traits to your advantage and to help
other people ?
3. How can you relate your opposing characteristics or traits to
the concept of
electrical charges ?