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Physical Science > Ch.20 Test > Flashcards

Ch.20 Test Flashcards

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1
Q

What is the SI unit of electric charge

A

The coulomb (C)

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2
Q

In excess or shortage of electric produces a?

A

Net electric charge

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3
Q

Force of attraction or repulsion between electrically charged objects

A

Electric force

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4
Q

The effect and electric charge has on charges surrounding

A

Electric field

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5
Q

Like charges blank and opposite charges blank

A

Repel/attract

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6
Q

The strength of an electric field depends on what

A

The amount of charge that produces the field and the distance from the charge

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7
Q

Study of the behavior of electric charges

A

Static electricity

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8
Q

How can static electricity be transferred

A

By friction contact or induction

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9
Q

Occurs when a pathway through which charges can move forms suddenly

A

Static discharge

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10
Q

The continuous flow of electric charge

A

Electric current

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11
Q

What does electric current need

A

A complete loop and source of electrical energy

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12
Q

Unit of electric current

A

A

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13
Q

Unit of voltage

A

V

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14
Q

Unit of resistance

A

(Symbol)

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15
Q

Unit of electric charge

A

C

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16
Q

What is the SI unit for electric current

A

Amp

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17
Q

What are the two types of current

A

Alternating current
And
Direct current

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18
Q

Flow of charge regularly reverses its direction

A

Alternating current

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19
Q

Charge flows only in one direction

A

Direct current

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20
Q

Material through which charge cannot flow easily

A

Electrical Insulator

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21
Q

Material through which charge can flow easily

A

Electrical conductor

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22
Q

Wood plastic rubber and air are all examples of

A

Electrical insulators

23
Q

Metal and copper are all examples of

A

Electrical conductor

24
Q

Opposition to the flow of charge is in a material

A

Resistance

25
Q

What three things is resistance affected by

A

Length thickness and temperature

26
Q

Is less resistance favored or unfavored

A

Less resistance is favored

27
Q

Voltage is aka

A

Potential difference

28
Q

Difference in electrical potential energy between two places in a field

A

Potential difference

29
Q

Source of electrical energy

A

Voltage

30
Q

What is the SI unit for voltage

A

Volt

31
Q

Complete path through which charge flows

A

Electric circuit

32
Q

Circuit diagrams use what to represent parts of circuit to show source of electrical energy

A

Symbols

33
Q

A circuit can either be

A

Open or closed

34
Q

In this type Of circuit the current flows in a complete loop

A

Closed circuit

35
Q

In this type of circuit the current stops in an incomplete Loop

A

Open circuit

36
Q

An example of turning lights off is what type of circuit

A

Open circuit

37
Q

And example of turning lights on is what type of circuit

A

Closed circuit

38
Q

In a series circuit how many paths does the charge have

A

One

39
Q

In a parallel circuit how many paths does the charge have

A

More than one path

40
Q

Current is the flow of

A

Positive charges

41
Q

Charge flows from

A

Positive to negative

42
Q

In a parallel circuit what happens if one part stops

A

It can still operate

43
Q

In a series circuit what happens if one part stops

A

Nothing can operate

44
Q

A property that causes subatomic particles such as protons and electrons to attract or repel each other

A

Electric charge

45
Q

Rate at which energy is converted to another form of energy

A

Electrical power

46
Q

P= i x v; what does everything stand for

A

P= watts
I=amps
V=volts

47
Q

E= p x t; what does everything stand for

A

E= electrical energy
P=power
T=time

48
Q

This electrical safety device melts if there is too much current

A

Fuse

49
Q

This electrical safety device is a third prong and the exes charge travel to the ground

A

Grounding

50
Q

This electrical safety device is a switch that opens when there’s too much current

A

Circuit breaker

51
Q

What does ohms law state

A

Voltage equals current times resistance

52
Q

Insulation prevents what

A

Short circuits

53
Q

What does the law of conservation of charge state

A

States that the total charge in an isolated system is constant

Physical Science (5 decks)

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