Q3: Electric Charge & Coulomb's Law Flashcards
(24 cards)
Electricty comes from the Greek word electron which means ______________
amber
It is the motion or flow of electrons in the form of an electric charge.
electricity
It is a fundamental property of matter that causes to be attracted toward or repelled from another charged object.
electrical charge
What is the electric charge of an electron?
-1.602x10^-19 C
True or False:
Protons and electrons can transfer to objects because they are located outside the nucleus.
False
only electrons
True or False:
Electrons can be easily removed from the atom.
True
When an electron moves, a ________ is generated.
charge
The movement of electrons makes ___________.
electricity
The gain or loss of electrons is called ________.
Ionization
The law of charges states that:
“Like charges repel each other, and unlike charges attract each other.”
The law of charges states that:
“Like charges repel each other, and unlike charges attract each other.”
Law of Conservation of charges states that:
“Charges cannot be created nor destroyed, but can be transferred from one material to another. The total charge in a system must remain constant.”
The build up of electric charges on the surface of an object.
static electricity
When the object loses its electron, it becomes ________ charged. When the object gains an electron, it becomes ________ charged.
- positively
- negatively
Gain charge by rubbing or friction.
Charging by rubbing
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
Materials that permit electricity or heat to pass through it.
conductors
Materials that do not permit heat and electricity to pass through it.
insulators
Coulumb’s law statest that the magnitude of the electric force between two-point charges is ________ proportional to the product of the charges and ________ proportional to the
square of the ________ between them.
- directly
- inversely
- distance
What is the value of Coulomb’s constant?
8.99 x 10 ^ 9 Nm^2c^-2
Who formulated the Coulomb’s Law?
Charles-Augustin de Coulomb
