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Worksheets

Electrical Science

Total questions: 47

Worksheet time: 27mins

Name
Class
Date
1.

What is the correct SI unit for Length?

a)

mm

b)

cm

c)

m

d)

km

2.

What is the correct SI unit for time?

a)

minutes

b)

hours

c)

seconds

d)

days

3.

Kilograms is the SI unit for which quantity?

a)

weight

b)

gravity

c)

force

d)

mass

4.

Ampere is the SI unit for which quantity?

a)

Current

b)

Voltage

c)

Resistance

d)

Impedance

5.

What is the correct SI unit for Potential Difference (AKA Electromotive Force)?

a)

Current

b)

Voltage

c)

Resistance

d)

Impedance

6.

What is the correct SI unit for Power?

a)

Hertz

b)

Kelvin

c)

Joules

d)

Watts

7.

Resistance is measured using which SI unit?

a)

Ohms

b)

meters

c)

Farads

d)

Henrys

8.

Electrical charge is measured using which SI unit?

a)

Ohms

b)

Ampere

c)

Volts

d)

Coulomb

9.

Which one of the following is an example of engineering notation?

a)

27.2 x 10⁶

b)

27.2 x 10⁴

c)

2.72x1022.72 x 10^2

d)

2.72 x 10⁸

10.

Which one of the following is an example of standard form?

a)

27.2 x 10⁶

b)

27.2 x 10⁴

c)

2.72x1022.72 x 10^2

d)

272 x 10⁸

11.

What is the correct multiple for kilo?

a)

10−310^{-3}

b)

10310^3

c)

10610^6

d)

10910^9

12.

What is the correct multiple for Mega?

a)

10−310^{-3}

b)

10310^3

c)

10610^6

d)

10910^9

13.

What is the correct multiple for Giga?

a)

10−310^{-3}

b)

10310^3

c)

10610^6

d)

10910^9

14.

What is the correct multiple for Tera?

a)

10−310^{-3}

b)

10610^6

c)

101210^{12}

d)

101510^{15}

15.

10−610^{-6} can be represented by which sub multiple?

a)

milli

b)

micro

c)

nano

d)

pico

16.

10−310^{-3} can be represented by which sub multiple?

a)

milli

b)

micro

c)

nano

d)

pico

17.

What enables the flow of current in a conductor?

a)

Neutrons

b)

Protons

c)

Electrons

d)

Higgs Boson

18.

If a material has a low resistance value in ohms, it is classed as a:

a)

A good insulator

b)

A good conductor

c)

A good inductor

d)

A good capacitor

19.

If a material has a high resistance value in ohms, it is classed as a:

a)

A good insulator

b)

A good conductor

c)

A good inductor

d)

A good capacitor

20.

What are the three effects of an electric current?

a)

lighting, magnetic, thermal

b)

thermal, magnetic, lighting

c)

lighting, magnetic, chemical

d)

magnetic, chemical, thermal

21.

If a current of 10 amps flows when a voltage of 110 volts is applied to a resistor, which one of the following is the value of the resistance?

a)

5 ohms

b)

7 ohms

c)

11 ohms

d)

13 ohms

22.

If a current of 5 amps flows when a voltage of 230 volts is applied to a resistor, which one of the following is the value of the resistance?

a)

15 ohms

b)

24 ohms

c)

32 ohms

d)

46 ohms

23.

What is the value of power is dissipated in a resistor, if a current of 5 amps flows when a voltage of 110 volts?

a)

400 Watts

b)

450 Watts

c)

500 Watts

d)

550 Watts

24.

What is the value of power is dissipated in a resistor, if a current of 4 amps flows when a voltage of 100 volts?

a)

400 Watts

b)

450 Watts

c)

500 Watts

d)

550 Watts

25.

An Ammeter is connected in series? True or false?

a)

True

b)

False

26.

A Voltmeter is connected in parallel? True or false?

a)

True

b)

False

27.

Which of the following is correct when connecting electrical measuring instruments? 

a)

Ammeters in parallel, voltmeters in series

b)

Ammeters in series, voltmeters in parallel

c)

Ammeters in series, voltmeters in series

d)

Ammeters in parallel, voltmeters in parallel

28.

An Alternator is a source of Alternating current (AC) or Direct current (DC)

a)

Alternating Current (AC)

b)

Direct Current (DC)

29.

An Battery is a source of Alternating current (AC) or Direct current (DC)

a)

Alternating Current (AC)

b)

Direct Current (DC)

30.

An Dynamo is a source of Alternating current (AC) or Direct current (DC)

a)

Alternating Current (AC)

b)

Direct Current (DC)

31.

An Transformer is a source of Alternating current (AC) or Direct current (DC)

a)

Alternating Current (AC)

b)

Direct Current (DC)

32.

An Transformer is a source of Alternating current (AC) or Direct current (DC)

a)

Alternating Current (AC)

b)

Direct Current (DC)

33.

An Photovoltaic cell is a source of Alternating current (AC) or Direct current (DC)

a)

Alternating Current (AC)

b)

Direct Current (DC)

34.

What type of technical drawing is shown in the image?

a)

Circuit diagram

b)

Wiring diagram

c)

Architectural diagram

d)

Block diagram

35.

What type of technical drawing is shown in the image?

a)

Circuit diagram

b)

Wiring diagram

c)

Architectural diagram

d)

Block diagram

36.

What type of technical drawing is shown in the image?

a)

Circuit diagram

b)

Wiring diagram

c)

Architectural diagram

d)

Block diagram

37.

What type of technical drawing is shown in the image?

a)

Circuit diagram

b)

Wiring diagram

c)

Architectural diagram

d)

Block diagram

38.

Identify the electrical symbols shown in the image

a)

1 way switch

b)

2 way switch

c)

Intermediate switch

d)

Corded pull down switch

39.

Identify the electrical symbols shown in the image

a)

Unswitched socket outlet

b)

1 way switch

c)

Switched socket outlet

d)

Fused Connection unit

40.

Identify the electrical symbols shown in the image

a)

Unswitched socket outlet

b)

Incandescent Ceiling light

c)

Wall light

d)

Protective device

41.

Identify the electrical symbols shown in the image

a)

Unswitched socket outlet

b)

Fuse link

c)

Wall light

d)

2 way switch

42.

Identify the electrical symbols shown in the image

a)

Meter symbol

b)

Neutral link

c)

Fuse link

d)

2 way switch

43.

Identify the electrical symbols shown in the image

a)

Intermediate switch

b)

Wall light

c)

Fuse link

d)

1 way switch

44.

Identify the electrical symbols shown in the image

a)

Volt meter

b)

Ammeter

c)

Watt meter

d)

Energy meter

45.

The scale applied to this architectural drawing is 1:50. What is the real life measurement of the wall measured on the drawing as 10cm?

a)

10 meters

b)

5 meters

c)

2 meters

d)

50 meters

46.

The scale applied to this architectural drawing is 1:100. What is the real life measurement of the wall measured on the drawing as 10cm?

a)

10 meters

b)

5 meters

c)

2 meters

d)

50 meters

47.

Drag the materials shown into the correct conductor or insulator column

Categorize the following

Aluminium

Copper

Silver

Gold

Silicone rubber

Thermoplastic PVC

Glass

Ceramic

Conductor
Insulator

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