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Chapter 7 Test

Total questions: 74

Worksheet time: 37mins

Name
Class
Date
1.

Name a natural magnet

a)

Lodestone

b)

Magnetite

c)

Both

d)

Neither

2.

Magnetic materials are:

a)

Iron

b)

Nickel

c)

Cobalt

d)

All of the above

3.

Two magnetic poles will repel each other if:

a)

Both are south poles

b)

One is a north and one is a south

c)

Both are the same size

d)

One is larger than the other

4.

Magnetic lines of force run how, in relation to a magnet's poles

a)

South to North

b)

East to West

c)

North to South

d)

West to East

5.

Static electricity means

a)

being at peace

b)

in motion

c)

having friction

d)

at rest

6.

To give an uncharged body a positive charge you must

a)

remove protons

b)

add protons

c)

remove electrons

d)

add electrons

7.

an electrical capacitor

a)

makes less electric charge

b)

refines electric charge

c)

produces electric charge

d)

stores electric charge

8.

the term used to express a potential difference is

a)

electromotive force

b)

volt

c)

electrical pressure

d)

all of the above

9.

A voltaic or wet cell consists of an electrolyte and

a)

2 electrons and 3 protons

b)

Copper and Glass

c)

2 dissimilar metals

d)

2 similar metals

10.

a flow of electrons constitutes

a)

resistance

b)

electric current

c)

static electricity

d)

coulombs

11.

dry cells are not really dry; they contain

a)

moisture in paste form

b)

some water

c)

sodium hydroxide

d)

a carbon rod

12.

Michael Faraday formulated the laws of

a)

High Frequency

b)

Oscillating Current

c)

Osmosis

d)

Electrolysis

13.

Electrolytic action is directly proportional to the length of time the

a)

hair takes to epilate

b)

heat is applied

c)

current flows

d)

needle is left in the skin

14.

electrolytic action is directly proportioned to the strength of the current in

a)

amperes

b)

volts

c)

ohms

d)

coulombs

15.

a dry cell produces electricity by

a)

a mechanical means

b)

chemical means

c)

electrical means

d)

thermal means

16.

a flow of electrons in the same direction is called

a)

alternating current

b)

direct current

c)

oscillating current

d)

dynamic current

17.

a circuit with a break or gap in it, so that no current can flow is called

a)

series circuit

b)

closed circuit

c)

open circuit

d)

fused circuit

18.

a unit of measurement of quantity of electricity is termed

a)

direct current

b)

volt

c)

ampere

d)

coulomb

19.

alternating current

a)

flows in one direction

b)

flows in interrupted pulses

c)

flows in cycles

d)

flows from a battery

20.

a unit of electrical pressure is termed

a)

a volt

b)

an ampere

c)

an ohm

d)

a conductor

21.

a milliampere is

a)

100 amperes

b)

1/1000 of an ampere

c)

1/10 of an ampere

d)

10/10 of an ampere

22.

whenever an electrical current is diverted from its prescribed course so that a very great current

a)

short circuit

b)

open circuit

c)

broken circuit

d)

closed circuit

23.

surrounding every wire that a current is flowing through is

a)

magnetic lines of force

b)

a soft iron core

c)

positive charges

d)

none of the above

24.

a soft iron core with wire coiled around it is called

a)

a conductor

b)

an insulator

c)

a thermal magnet

d)

an electromagnet

25.

a direct current generator produced electricity by

a)

chemical means

b)

physical means

c)

mechanical means

d)

a battery

26.

a transformer

a)

stores voltage

b)

changes chemical electricity to mechanical

c)

makes high frequency

d)

steps voltage up or down

27.

alternating current can be converted to direct current by a

a)

rectifier

b)

rheostat

c)

capacitor

d)

transformer

28.

a 60 hertz alternating current changes it’s polarity

a)

100 times a second

b)

60 times a second

c)

10000 times per minute

d)

60000 times per minute

29.

Galvanic current is

a)

direct current

b)

no longer being used

c)

oscillating

d)

high frequency

30.

All direct current has

a)

Negative and neutral poles

b)

Positive poles onty

c)

Negative poles only

d)

Positive and negative poles

31.

Electrons alwavs flow from

a)

Positive to negative

b)

Negative to negative

c)

Negative to positive

d)

Positive to neutral

32.

The smallest unit of matter into which, a substance can be divided, without losing its basic properties is

a)

An atom

b)

A molecule

c)

Nucleus

d)

Neutron

33.

An atom consists of a nucleus, areund which rotates

a)

protons

b)

electrons

c)

ions

d)

electricity

34.

When an atom contains as many electrons as protons, the power of attraction is said to be

a)

negative

b)

positive

c)

ionized

d)

neutralized

35.

An atom which has an excess of a deficiency of electrons is called

a)

an ion

b)

stable

c)

attractive

d)

repulsive

36.

A substance that will readily allow the flow of electrons is called a:

a)

conductor

b)

circuit

c)

direct current

d)

oscillating current

37.

Rubber, plastic, glass asbestos and dry wood are examples of what kind of materials?

a)

conductors

b)

insulators

c)

metallic

d)

neutral

38.

A device made of materials that quickly melt from too much current, thereby creating a gap so no current can flow is:

a)

fuse

b)

closed circuit

c)

open circuit

d)

capacitor

39.

A measurement of resistance is called a:

a)

volt

b)

ampere

c)

ohm

d)

watt

40.

A measurement of current strength is called:

a)

volt

b)

ampere

c)

ohm

d)

pressure

41.

A unit of measure of power is called:

a)

kilowatt

b)

watt

c)

ampere

d)

milliampere

42.

Consumers are charged for electricity based on use in:

a)

Watts

b)

Kilowatt hours KWH

c)

Electricity

d)

Power

43.

Cataphoreisis is the use of positive pole, to produce what in the skin

a)

acid

b)

alkali

c)

irritation

d)

redness

44.

The manner in which electricity is used to produce a therapeutic effect is:

a)

rotation

b)

anaphorises

c)

armature

d)

modality

45.

How many modalities are used in the field of electrology:

a)

3

b)

2

c)

4

d)

1

46.

A device used for altering voltage is alternating current is a:

a)

transformer

b)

rectifier

c)

rheostat

d)

all of the above

47.

The quantity of current flowing through a circuit is controlled by:

a)

alternation

b)

impulse

c)

magnet

d)

rheostat

48.

A device used to produce an oscillating current is a:

a)

alternator

b)

impulse/ oscillator

c)

magnet

d)

rheostat

49.

A 60 Hertz alternating current could be produced by rotating an armature 60 revolutions per second. Each revolution is called a:

a)

oscillation

b)

impulse

c)

cycle or a hertz

d)

alternation

50.

When magnetic lines of force cross a conductor, a current is induced in the:

a)

fuse

b)

conductor

c)

open circuit

d)

full wave tube

51.

A protective covering that prevents the passage of electricity is called:

a)

connecting rod

b)

insulation

c)

carbon cylinder

d)

conductor

52.

A Good conductor of electricity is:

a)

asbestos

b)

copper

c)

cotton

d)

paper

53.

A Volt is:

a)

a unit of resistance

b)

a unit of current flow

c)

a unit of pressure

d)

one coulomb per second

54.

Insulation is:

a)

a measure of power

b)

the third skin layer

c)

covering for electrical wire

d)

electrical phoresis

55.

A Short circuit is caused by:

a)

a break in the wire

b)

electricity leaving a prescribed course

c)

plugging in too many appliances

d)

power failure

56.

A Capacitor (condenser):

a)

transforms electricity

b)

regulates electricity

c)

accumulates electricity

d)

measures electricity

57.

The rheostat is:

a)

used for regulating

b)

used for changing ac to dc current

c)

used for registering strength of current

d)

a kind of knob

58.

The galvanic current used in electrolysis is also known as:

a)

telsa

b)

voltage

c)

direct current

d)

phoresis

59.

The intensity of high frequency is controlled by the:

a)

rheostat

b)

dial

c)

position of the needle cord

d)

timer

60.

A switch that is automatically operated an an electro-magnet is called a:

a)

transformer

b)

selector

c)

circuit breaker

d)

conductor

61.

A step-up transformer:

a)

Steps up voltage, steps down amperage

b)

Steps down voltage, steps down amperage

c)

Steps up voltage, steps up amperage

d)

Steps down voltage, steps down amperage

62.

Which of the following is not involved in producing electricity?

a)

generator

b)

battery

c)

magneto

d)

needle

63.

Which of the following is a non-conductor of electricity?

a)

water

b)

silver

c)

glass

d)

carbon

64.

Protons are:

a)

negative and positive

b)

positive

c)

negative

d)

neither

65.

To give an uncharged body a positive charge, you must remove:

a)

protons

b)

electrons

c)

neutrons

d)

static

66.

The manner in which electricity is controlled for therapeutic purpose is referred to as:

a)

magnetism

b)

modality

c)

megacycle

d)

milliamperage

67.

When electrical current is in actual operation, it is known as:

a)

a complete circuit

b)

a short circuit

c)

a ground circuit

d)

an open circuit

68.

One of the following is not a mechanical means of generating electricity:

a)

dynamo

b)

generator

c)

magneto

d)

battery

69.

A Step up transformer is a device used on alternating current to:

a)

increase amperage and decrease voltage

b)

decrease voltage and amperage

c)

increase voltage and decrease amperage

d)

increase voltage and amperage

70.

A conductor of electricity:

a)

carries current

b)

transmits current

c)

conveys current

d)

all of the above

71.

Alternating current can be changed to a direct current by:

a)

a transformer

b)

a rectifier

c)

an oscillator

d)

a spark gap

72.

A safety device is a:

a)

rheostat

b)

fuse

c)

rectifier

d)

condenser

73.

Electricity is produced by all except one of the following:

a)

friction

b)

magnetism

c)

chemical action

d)

cathode action

74.

In order to make current flow you must have:

a)

wattage

b)

voltage

c)

non-conductors

d)

insulation

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