ELECTRIC CHARGE Flashcards
Comes from the Greek word
electron which means
“amber”.
Electricity / Electrical Energy
It is a fossilized resin material
used in jewelry
amber
It is the motion or flow of electrons in the
form of an electric charge.
Electricity
Is a fundamental property of matter that
causes to be attracted toward or
repelled from another charged object.
Electrical Charge
Proton’s charge
+1.67x10^-27C
Electron’s Charge
-1.602x10^-19 C
Neutron’s Charge
None
Only the __________
can transfer to
objects because
they are located
outside the nucleus.
Free Electrons/Electrons
Electron can be easily
removed from the atom.
Free Electrons
When an electron
moved, a ______ is
generated
charge
The movement of
electrons makes the
______________.
electricity
The gain or loss of electrons is called
Ionization
Who coined the law of charges & law of conservation of charge?
Benjamin Franklin
“Like charges repel each other, and
unlike charges attract each other.”
Law of Charges
“Charges cannot be created nor destroyed, but can be transferred
from one material to another. The total charge in a system must remain constant.”
Law of Conservation of Charge
Is the build up of electric charges on the
surface of an object.
Static Electricity
When the object loses its electron,
it becomes
positively charged
When the object gains an
electron, it becomes
negatively
charged
three methods of charging
- Charging by rubbing
- Charging by induction
- Charging by conduction
Gain charge by rubbing or friction.
Charging by rubbing
An object that holds its electron
weakly will eventually lose them
when rubbed with another object
that has a stronger holds in its
electrons.
Charging by rubbing
Is an arrangement of materials / substances according to their ability to gain or lose electrons.
Triboelectric Series
Charge is created in a nearby object,
without direct contact.
Charging by Induction
It is the process of
separation of charges in
an object that remains
neutral.
Polarization
Transfer of electrons from a charged
object to another by direct contact.
Charging by conduction
Electrons transfer to the object
making it the same charge.
Charging by conduction
Materials that permit electricity or
heat to pass through it.
Conductors
Materials that do not permit heat
and electricity to pass through it.
Insulators
Two unlike charges_________
attract each other
Material A is positively charged. When brought
near to material B, they attract. Which of the
following is true?
A. Material B is negatively charged
B. Material B is uncharged
C. Material B is positively charged
D. Both are uncharged
A. Material B is negatively charged
Which of the following is not a process of charging?
A. Induction B. Friction C. Conduction D. Convection
D. Convection
- Material B has become positively charged after
rubbing it with Material A. Which of the following
statements is correct?
A. Material B loses protons
B. Material B gains electrons
C. Material A loses proton
D. Material A gains electron
D. Material A gains electron
Materials that loses electrons
Rabbit Fur
Hair
Glass
Mica
Wool
Materials that gains electrons
Silk
Paper
Wood
Amber
Rubber Balloon
Polystyrene
Acrylic
Polyethylene
Teflon
