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GRADE 12 - PHYSICS > ELECTRICITY > Flashcards

ELECTRICITY Flashcards

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1
Q

a hardened translucent
yellowish tree resin that when you rubbed it with a piece of
cloth, could attract nearby objects.

A

amber

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2
Q

supported this idea that many
other substances possess the same ability as that of amber.

A

William Gilbert (1544-1603)

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3
Q

term William Gilbert used to refer to the phenomenon of amber

A

electrics

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4
Q

ability of amber

A

electricity

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5
Q

Greek word meaning “amber”

A

electron

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6
Q

This idea supported that any object when
being rubbed could attract small pieces of matter. This object
attracted is said to have acquired charge or electrified.

A

Electricity

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7
Q

is the
flow of electrons.

A

Electricity

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8
Q

an electrical property of matter that creates a force between objects

A

electric charge

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9
Q

study of all phenomena associated with electric charges at rest

A

electrostatic

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10
Q

the fundamental quantity of electricity.

A

Charge (q)

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11
Q

The
SI unit of charge

A

Coulomb (C)

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12
Q

the SI unit of charge was named after

A

Charles Augustin de Coulomb

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13
Q

1C = how many protons/electrons?

A

6.25 x 10^18

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14
Q

fundamental unit of matter and composed of
particles that carry electric charges

A

atoms

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15
Q

location of proton

A

inside nucleus

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16
Q

mass of proton

A

1.673 x 10^-27 kg

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17
Q

charge of proton

A

1.602 x 10^-19 C

18
Q

location of electron

A

outside nucleus

19
Q

mass of electron

A

9.109 x 10^-31 kg

20
Q

charge of electron

A

-1.602 x 10^-19 C

21
Q

location of neutron

A

inside nucleus

22
Q

mass of neutron

A

1.673 x 10^-27 kg

23
Q

the measure of the ease at which electric
charge moves through a material

A

conductivity

24
Q

materials that really allow the flow of
charges

A

conductors

25
Q

materials that resist the flow of charges

A

insulators

26
Q

intermediate between conductors
and insulators

A

semiconductor

27
Q

a force that pulls objects together

A

force of attraction

28
Q

force that pushes objects apart from each other

A

force of repulsion

29
Q

“opposite charges attract, and like charges repel”

A

law of charges

30
Q

law of charges

A

“opposite charges attract, and like charges repel”

31
Q

charging processes (3)

A

friction
conduction
induction

32
Q

can occur by rubbing two different materials
the electrons from the surface of one of the objects move to the surface of the other
gives a positive charge to one substance and a negative charge to the other

A

charging by friction

33
Q

is an
arrangement of
materials/substances
according to their ability to
gain or lose electrons

A

triboelectric series

34
Q

The farther the materials are
from the each other in the
series,

A

the stronger is the electrical force of attraction

35
Q

Triboelectric Series (rank from positive to negative)

A

air
human body
glass
nylon
wool
lead
cotton
aluminum
paper
steel
wood
gelatin
~ nickel copper
gold, platinum
natural rubber
sulfur
acetate
polyester
celluloid
urethane
polyethylene
vinyl
silicon
teflon

36
Q

happens when electrons are transferred from one materials to another by direct contact
involves the direct physical contact of a charged object to a neutral object

A

charging by conduction

37
Q

During
conduction ,
the same
charge is
created in

A

the neutral charge

38
Q

charging process where an object can be charged without actual contact with any other charged object

A

charging by induction

39
Q

escape.

When electric charges are transferred very
quickly, the process is called

A

electrical discharge

40
Q

the discharge
happens before contact actually occurs-
examples: sparks or lightning

A

caused by induction

GRADE 12 - PHYSICS (3 decks)

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