8ʳ Making use of electricity
S2 Science Test
Unit 8ġ Making use of electricity
Name:____________________________
ΰʳ ʳ ʳ α
Time and Marks
Class: ____________________________
Part A: 35 min / 100 marks
Date: ____________________________
Parts A & B: 45 min / 120 marks
Note:
ʳ
1
Attempt ALL questions.
2
Write your answers in the spaces provided on the Answer Sheets.
ʳ
Part A (Level 1)
A
True or false questions
(5 marks, 1 mark each)
Study each of the following statements. Write ‘T’ for a true statement and ‘F’ for a false statement on the answer sheets. 1
Electric cells store electrical energy.
2
A bulb in a circuit will light up once it is connected to one end of a battery.
3
When the resistance of a circuit increases, the current flows around the circuit will become smaller.
4
Two fuses rated 15 A connected in series allow a current larger than 30 A to flow through them.
5
The live wire in a plug is blue in colour.
B
Multiple-choice questions
(20 marks, 2 marks each)ġ
Choose the correct answer for each of the following questions.
1
Which of the following circuits has the bulb lighted up when the circuit is closed?
A
2
B
C
Which of the following is an electrical conductor?
A
Rubber
B
Wool thread
C
Iron nail
D
Wooden board
© Oxford University Press 2005
- 12 -
D
Living Science (Second Edition) Unit Test 2
3
4
Which of the following copper wires has the smallest resistance?
A
Short and thick
B
Short and thin
C
Long and thick
D
Long and thin
ʳ
Which of the following electric components has to be used in a dimmer switch or a volume controller?
A
5
B
C
D
C
D
Which of the following is a parallel circuit?
A
6
8ʳ Making use of electricity
B
In general, the electrical components in a circuit have certain resistance. When an electric current flows through them, part of the electrical energy is lost in the form of
7
A
chemical energy.
B
potential energy.
C