Ch.20 Test

Question 1

What is the SI unit of electric charge

Answer 1

The coulomb (C)

Question 2

In excess or shortage of electric produces a?

Answer 2

Net electric charge

Question 3

Force of attraction or repulsion between electrically charged objects

Answer 3

Electric force

Question 4

The effect and electric charge has on charges surrounding

Answer 4

Electric field

Question 5

Like charges blank and opposite charges blank

Answer 5

Repel/attract

Question 6

The strength of an electric field depends on what

Answer 6

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

Question 7

Study of the behavior of electric charges

Answer 7

Static electricity

Question 8

How can static electricity be transferred

Answer 8

By friction contact or induction

Question 9

Occurs when a pathway through which charges can move forms suddenly

Answer 9

Static discharge

Question 10

The continuous flow of electric charge

Answer 10

Electric current

Question 11

What does electric current need

Answer 11

A complete loop and source of electrical energy

Question 12

Unit of electric current

Answer 12

A

Question 13

Unit of voltage

Answer 13

V

Question 14

Unit of resistance

Answer 14

(Symbol)

Question 15

Unit of electric charge

Answer 15

C

Question 16

What is the SI unit for electric current

Answer 16

Amp

Question 17

What are the two types of current

Answer 17

Alternating current
And
Direct current

Question 18

Flow of charge regularly reverses its direction

Answer 18

Alternating current

Question 19

Charge flows only in one direction

Answer 19

Direct current

Question 20

Material through which charge cannot flow easily

Answer 20

Electrical Insulator

Question 21

Material through which charge can flow easily

Answer 21

Electrical conductor

Question 22

Wood plastic rubber and air are all examples of

Answer 22

Electrical insulators

Question 23

Metal and copper are all examples of

Answer 23

Electrical conductor

Question 24

Opposition to the flow of charge is in a material

Answer 24

Resistance

Question 25

What three things is resistance affected by

Answer 25

Length thickness and temperature

Question 26

Is less resistance favored or unfavored

Answer 26

Less resistance is favored

Question 27

Voltage is aka

Answer 27

Potential difference

Question 28

Difference in electrical potential energy between two places in a field

Answer 28

Potential difference

Question 29

Source of electrical energy

Answer 29

Voltage

Question 30

What is the SI unit for voltage

Answer 30

Volt

Question 31

Complete path through which charge flows

Answer 31

Electric circuit

Question 32

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

Answer 32

Symbols

Question 33

A circuit can either be

Answer 33

Open or closed

Question 34

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

Answer 34

Closed circuit

Question 35

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

Answer 35

Open circuit

Question 36

An example of turning lights off is what type of circuit

Answer 36

Open circuit

Question 37

And example of turning lights on is what type of circuit

Answer 37

Closed circuit

Question 38

In a series circuit how many paths does the charge have

Answer 38

One

Question 39

In a parallel circuit how many paths does the charge have

Answer 39

More than one path

Question 40

Current is the flow of

Answer 40

Positive charges

Question 41

Charge flows from

Answer 41

Positive to negative

Question 42

In a parallel circuit what happens if one part stops

Answer 42

It can still operate

Question 43

In a series circuit what happens if one part stops

Answer 43

Nothing can operate

Question 44

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

Answer 44

Electric charge

Question 45

Rate at which energy is converted to another form of energy

Answer 45

Electrical power

Question 46

P= i x v; what does everything stand for

Answer 46

P= watts I=amps V=volts

Question 47

E= p x t; what does everything stand for

Answer 47

E= electrical energy P=power T=time

Question 48

This electrical safety device melts if there is too much current

Answer 48

Fuse

Question 49

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

Answer 49

Grounding

Question 50

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

Answer 50

Circuit breaker

Question 51

What does ohms law state

Answer 51

Voltage equals current times resistance

Question 52

Insulation prevents what

Answer 52

Short circuits

Question 53

What does the law of conservation of charge state

Answer 53

States that the total charge in an isolated system is constant