It Sci Y5 Topical Test 5
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TOPICAL TEST 5 : ELECTRICITY Section A This question paper consists of 25 questions. Answer all questions. Every question is followed by four options A, B, C and D. Choose the correct answer. 1 Which of the following does not produce electricity? A C
B
Diagram 3
D
Which electric circuit is represented by the circuit diagram above? A C
2 Diagram 1 shows two objects.
B P
D
Q Diagram 1
State the sources of electricity used for the two objects. P
Q
A
Accumulator
Dynamo
B
Dynamo
Dry cell
C
Solar cell
Accumulator
D
Dynamo
Solar cell
6 Which of the bulbs in the following circuit diagrams are the brightest? A C
B
D
3 What is the symbol for a bulb? A
C
B
7 Diagram 4 shows an electric circuit diagram which consists of three identical bulbs and three switches.
D
4 Diagram 2 shows a circuit diagram.
Diagram 4
Which of the following statements is true? A Bulbs X and Z are arranged in parallel. B Bulbs X and Y are arranged in parallel. C Bulbs X, Y and Z are arranged in series. D Bulbs X, Y and Z are arranged in parallel.
Diagram 2
What do X and Y represent? X
Y
A
Switch
Dry cell
B
Dry cell
Wire
C
Bulb
Switch
D
Dynamo
Solar cell
8 Diagram 5 shows an electric circuit diagram.
5 Diagram 3 shows a circuit diagram.
Diagram 5 18
Which bulbs will light up when L and S are switched on and P is switched off? A X and Y C Y and Z B X and Z D X, Y and Z 9 Diagram 6 shows a circuit.
Diagram 6
P
R
Q
S
Diagram 9
Which of the following circuit diagrams represents the circuit shown? A C
Which of the circuits have the bulbs arranged in series? A P and Q C Q and S B P and R D R and S 14 Diagram 10 shows two bulbs and three switches connected in an electric circuit.
B
D
10 Diagram 7 shows a source of energy. Diagram 10
What could be done to light up bulb X only? A Turn on the switches P and Q. B Turn on the switches Q and R. C Turn on the switches P and R. D Turn on the switches P, Q and R.
Diagram 7
Which of the following statements is true about the source of energy shown? A It needs to be recharged always. B It is used to light up the bulb in a car. C It converts kinetic energy into electrical energy. D It converts chemical energy into electrical energy.
15 Diagram 11 shows four bulbs connected in series to some cells.
11 Diagram 8 shows a source of electricity commonly used in our daily life.
Diagram 11
What will happen when switch X is closed? A Only bulb P will light up. B Only bulb S will light up. C Bulbs P, Q and R will light up. D Bulbs P, Q, R and S will not light up.
Diagram 8
Which of the following statements are true about the object in Diagram 8? I Cheap II Easy to carry III Can be recharged IV Supply bigger amount of electricity A I and II C II and III B I and III D III and IV
16 A pupil carried out an investigation to study the brightness of the bulb in a circuit. Which of the following will not affect the brightness of the bulb in a circuit? A The number of bulbs B The number of dry cells used C The arrangement of the cells D The arrangement of the switches 17 Diagram 12 shows a circuit set up in a laboratory.
12 Which of the following sources of electricity is used to supply electricity to our house? A Fuel cell C Accumulator B Solar cell D Generator in power station 13 Diagram 9 shows four circuits. 19
Choose the correct statements. I Bulb P and bulb Q are arranged in parallel. II Bulb P and bulb R are arranged in parallel. III Bulb Q and bulb R are arranged in parallel. IV All the bulbs are arranged in parallel. A I and II C II and IV B II and III D III and IV
Diagram 12
The advantage of the circuit is A it uses less energy. B it does not prevent overloading. C each bulb can be switched on or off individually. D it does not require the use of switch to work.
22 Electrical appliances are designed with safety features so that they can prevent I disease from spreading. II electric shock. III electrocution. IV heart attack. A I and II C II and IV B II and III D III and IV
18 Diagram 13 shows when the ends of the lead rods are dipped into a beaker of acid, the bulb lights up.
23 Which of the following statements are correct about the handling of electric appliances? I Mishandling of electrical appliances may result in electrocution. II We must repair the faulty electrical appliances ourselves. III We must not use our dry hand to switch on or off electrical appliances. IV We must not touch the victims of electric shock with our bare hands. A I and IV B II and III C II and IV D III and IV
Diagram 13
Which of the following sources of electricity makes use of the same principle as shown in Diagram 13? A Accumulator C Solar cell B Dynamo D Dry cell 19 Diagram 14 shows an electric circuit.
24 Diagram 16 shows a boy using his wet hand to switch on an electrical appliance.
Diagram 14
What is the function of the part labelled R? A To supply electricity to the circuit B To control the brightness of the bulb C To break or complete an electric circuit D To stop the flow of electricity in the circuit 20
Which of the following can cause electrical accidents? A Switching off the electrical appliances when not in use. B Switching off lights when replacing the bulb C Repairing faulty electrical appliances by a qualified electrician. D Using too many electrical appliances.
Diagram 16
What could be the consequence of his deed if there is an electric leakage? A Bruise in his hand B Electric shock C A burn on his hand D A cut on his hand
21 Diagram 15 shows an electric circuit diagram.
25 What should we do to prevent from having electric shock? A Use faulty electrical appliances. B Touch electrical appliances with wet hand. C Repair faulty electrical appliances on our own. D Prevent from touching victims of electric shocks with our bare hands.
Diagram 15
Section B Answer all the questions. Write your answers in the spaces provided. © PNI Neuron (M) Sdn. Bhd. (554690-H)
17
1 Diagram 1 shows four sources of electrical energy.
pupils.
Diagram 2
Table 1 shows the brightness of each bulb in the circuit.
Diagram 1
(a) Name the sources of electrical energy. T : _____________________________________ U: _____________________________________ V: _____________________________________ W: _____________________________________ [4 marks]
Circuit
Brightness of bulbs
A
Brightest
B
Brighter
C
Bright Table 1
(a) How are the bulbs in all the circuits connected? ________________________________________ [1 mark] (b) Based on the investigation, identify (i) what is changed (manipulated variable): _____________________________________ (ii) what is observed (responding variable): _____________________________________ (iii) what is kept the same (constant variable): _____________________________________ [3 marks]
(b) Name one appliance that uses the following as its source of energy. T : ______________________________________ U : _____________________________________ [2 marks] (c) State the transformation of energy for the following sources of electrical energy.
(c) State the relationship (hypothesis) between what is changed (manipulated) and what is observed (responding). _______________________________________ [1 mark]
Accumulator : ____________________________ ____________________________ Dynamo : ________________________________
(d) The investigation is continued by using four bulbs in a circuit with same quantity of dry cells. Predict the brightness of the bulbs in the circuit. ________________________________________ [1 mark]
________________________________ [2 marks] (d) What is the advantage of using dynamo as compared to a dry cell or an accumulator? ________________________________________ [2 marks]
(e) Predict what will happen when the number of dry cells in circuit B is increased up to 4.
Electrical appliances need proper handling because it will be very dangerous if we do not use them properly.
_______________________________________ [1 mark] (f) What can be concluded from this investigation?
(e) State two safety precautions that should be taken when using electrical appliances.
________________________________________ [1 mark]
1. ______________________________________ 2. ______________________________________ [2 marks] 2 Diagram 2 shows three circuits set up by a group of
21
B
Diagram 3
D
Which electric circuit is represented by the circuit diagram above? A C
2 Diagram 1 shows two objects.
B P
D
Q Diagram 1
State the sources of electricity used for the two objects. P
Q
A
Accumulator
Dynamo
B
Dynamo
Dry cell
C
Solar cell
Accumulator
D
Dynamo
Solar cell
6 Which of the bulbs in the following circuit diagrams are the brightest? A C
B
D
3 What is the symbol for a bulb? A
C
B
7 Diagram 4 shows an electric circuit diagram which consists of three identical bulbs and three switches.
D
4 Diagram 2 shows a circuit diagram.
Diagram 4
Which of the following statements is true? A Bulbs X and Z are arranged in parallel. B Bulbs X and Y are arranged in parallel. C Bulbs X, Y and Z are arranged in series. D Bulbs X, Y and Z are arranged in parallel.
Diagram 2
What do X and Y represent? X
Y
A
Switch
Dry cell
B
Dry cell
Wire
C
Bulb
Switch
D
Dynamo
Solar cell
8 Diagram 5 shows an electric circuit diagram.
5 Diagram 3 shows a circuit diagram.
Diagram 5 18
Which bulbs will light up when L and S are switched on and P is switched off? A X and Y C Y and Z B X and Z D X, Y and Z 9 Diagram 6 shows a circuit.
Diagram 6
P
R
Q
S
Diagram 9
Which of the following circuit diagrams represents the circuit shown? A C
Which of the circuits have the bulbs arranged in series? A P and Q C Q and S B P and R D R and S 14 Diagram 10 shows two bulbs and three switches connected in an electric circuit.
B
D
10 Diagram 7 shows a source of energy. Diagram 10
What could be done to light up bulb X only? A Turn on the switches P and Q. B Turn on the switches Q and R. C Turn on the switches P and R. D Turn on the switches P, Q and R.
Diagram 7
Which of the following statements is true about the source of energy shown? A It needs to be recharged always. B It is used to light up the bulb in a car. C It converts kinetic energy into electrical energy. D It converts chemical energy into electrical energy.
15 Diagram 11 shows four bulbs connected in series to some cells.
11 Diagram 8 shows a source of electricity commonly used in our daily life.
Diagram 11
What will happen when switch X is closed? A Only bulb P will light up. B Only bulb S will light up. C Bulbs P, Q and R will light up. D Bulbs P, Q, R and S will not light up.
Diagram 8
Which of the following statements are true about the object in Diagram 8? I Cheap II Easy to carry III Can be recharged IV Supply bigger amount of electricity A I and II C II and III B I and III D III and IV
16 A pupil carried out an investigation to study the brightness of the bulb in a circuit. Which of the following will not affect the brightness of the bulb in a circuit? A The number of bulbs B The number of dry cells used C The arrangement of the cells D The arrangement of the switches 17 Diagram 12 shows a circuit set up in a laboratory.
12 Which of the following sources of electricity is used to supply electricity to our house? A Fuel cell C Accumulator B Solar cell D Generator in power station 13 Diagram 9 shows four circuits. 19
Choose the correct statements. I Bulb P and bulb Q are arranged in parallel. II Bulb P and bulb R are arranged in parallel. III Bulb Q and bulb R are arranged in parallel. IV All the bulbs are arranged in parallel. A I and II C II and IV B II and III D III and IV
Diagram 12
The advantage of the circuit is A it uses less energy. B it does not prevent overloading. C each bulb can be switched on or off individually. D it does not require the use of switch to work.
22 Electrical appliances are designed with safety features so that they can prevent I disease from spreading. II electric shock. III electrocution. IV heart attack. A I and II C II and IV B II and III D III and IV
18 Diagram 13 shows when the ends of the lead rods are dipped into a beaker of acid, the bulb lights up.
23 Which of the following statements are correct about the handling of electric appliances? I Mishandling of electrical appliances may result in electrocution. II We must repair the faulty electrical appliances ourselves. III We must not use our dry hand to switch on or off electrical appliances. IV We must not touch the victims of electric shock with our bare hands. A I and IV B II and III C II and IV D III and IV
Diagram 13
Which of the following sources of electricity makes use of the same principle as shown in Diagram 13? A Accumulator C Solar cell B Dynamo D Dry cell 19 Diagram 14 shows an electric circuit.
24 Diagram 16 shows a boy using his wet hand to switch on an electrical appliance.
Diagram 14
What is the function of the part labelled R? A To supply electricity to the circuit B To control the brightness of the bulb C To break or complete an electric circuit D To stop the flow of electricity in the circuit 20
Which of the following can cause electrical accidents? A Switching off the electrical appliances when not in use. B Switching off lights when replacing the bulb C Repairing faulty electrical appliances by a qualified electrician. D Using too many electrical appliances.
Diagram 16
What could be the consequence of his deed if there is an electric leakage? A Bruise in his hand B Electric shock C A burn on his hand D A cut on his hand
21 Diagram 15 shows an electric circuit diagram.
25 What should we do to prevent from having electric shock? A Use faulty electrical appliances. B Touch electrical appliances with wet hand. C Repair faulty electrical appliances on our own. D Prevent from touching victims of electric shocks with our bare hands.
Diagram 15
Section B Answer all the questions. Write your answers in the spaces provided. © PNI Neuron (M) Sdn. Bhd. (554690-H)
17
1 Diagram 1 shows four sources of electrical energy.
pupils.
Diagram 2
Table 1 shows the brightness of each bulb in the circuit.
Diagram 1
(a) Name the sources of electrical energy. T : _____________________________________ U: _____________________________________ V: _____________________________________ W: _____________________________________ [4 marks]
Circuit
Brightness of bulbs
A
Brightest
B
Brighter
C
Bright Table 1
(a) How are the bulbs in all the circuits connected? ________________________________________ [1 mark] (b) Based on the investigation, identify (i) what is changed (manipulated variable): _____________________________________ (ii) what is observed (responding variable): _____________________________________ (iii) what is kept the same (constant variable): _____________________________________ [3 marks]
(b) Name one appliance that uses the following as its source of energy. T : ______________________________________ U : _____________________________________ [2 marks] (c) State the transformation of energy for the following sources of electrical energy.
(c) State the relationship (hypothesis) between what is changed (manipulated) and what is observed (responding). _______________________________________ [1 mark]
Accumulator : ____________________________ ____________________________ Dynamo : ________________________________
(d) The investigation is continued by using four bulbs in a circuit with same quantity of dry cells. Predict the brightness of the bulbs in the circuit. ________________________________________ [1 mark]
________________________________ [2 marks] (d) What is the advantage of using dynamo as compared to a dry cell or an accumulator? ________________________________________ [2 marks]
(e) Predict what will happen when the number of dry cells in circuit B is increased up to 4.
Electrical appliances need proper handling because it will be very dangerous if we do not use them properly.
_______________________________________ [1 mark] (f) What can be concluded from this investigation?
(e) State two safety precautions that should be taken when using electrical appliances.
________________________________________ [1 mark]
1. ______________________________________ 2. ______________________________________ [2 marks] 2 Diagram 2 shows three circuits set up by a group of
21
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