Curriculum
Course: HIA International — Grade 8
time left:
:
:
Login

Curriculum

HIA International — Grade 8

Unit 1: Photosynthesis and the carbon cycle

0/22

Unit 2: Properties of materials

0/50

Unit 3: Forces and energy

0/50

Unit 4: Maintaining life

0/34

Unit 5: Reactivity

0/41

Unit 6: Sound and space

0/40

Unit 7: Genes and inheritance

0/30

Unit 8: Rates of reaction

0/34

Unit 9: Electricity

0/36
Quiz

Checkpoint Grade 8 Unit 9 – 9.1 Flow Of Electricity

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit

Flow Of Electricity Checkpoint Physics quiz set 2: free practice for Cambridge Checkpoint Physics 0893. Work through this Flow Of Electricity Checkpoint Physics quiz set 2 and get instant feedback on every answer. If you get stuck, review the 5.1 Flow of electricity lesson. More practice: Cambridge Checkpoint Physics 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 50
  • Passing grade: B+
  • Time limit:
Start Quiz
1.
Which statement correctly describes electrons?
the type of charge carried by an electron
connection points of a cell or battery
the rate of flow of electric charge
negatively charged particles
2.
Which statement correctly describes negative charge?
negatively charged particles
the rate of flow of electric charge
the type of charge carried by an electron
connection points of a cell or battery
3.
Which statement correctly describes terminals?
negatively charged particles
the type of charge carried by an electron
the rate of flow of electric charge
connection points of a cell or battery
4.
Which statement correctly describes current?
negatively charged particles
connection points of a cell or battery
the rate of flow of electric charge
the type of charge carried by an electron
5.
Which definition should be paired with electrons?
the rate of flow of electric charge
negatively charged particles
the type of charge carried by an electron
connection points of a cell or battery
6.
Which of these is the FIRST step in the correct order?
electrons leave one terminal
electrons move through components
electrons reach the other terminal
connect a complete circuit
7.
Which step comes immediately after "electrons leave one terminal"?
connect a complete circuit
electrons reach the other terminal
electrons move through components
8.
Which practical work belongs to Flow Of Electricity?
Measure current at different points in a series circuit and compare readings
Test materials in a simple circuit and classify them from evidence
Translate between a real circuit and a labelled circuit diagram
Use a complete circuit model and distinguish electron flow from conventional current direction
9.
Jamal drew two arrows, X and Y, beside the top wire of this motor circuit. Which option correctly states what each arrow shows?
Dr Dabour Hub Academy - figure 1
X shows electron flow; Y shows conventional current
X shows conventional current; Y shows electron flow
Both arrows show electron flow, as electrons go both ways
Neither is right: current flows out of both terminals
10.
Dina uses the water model shown to explain a circuit with one lamp. The narrow pipe stands for the lamp. How do the readings on flow meters P and Q compare, and what does this tell her about the circuit?
Dr Dabour Hub Academy - figure 2
P and Q are equal, so current is not used up by the lamp
Q is lower than P, so the lamp uses up some current
P is lower than Q, so current builds up after the lamp
Q reads zero, as all the flow is used in the narrow pipe
11.
Hassan measured the current through a resistor at different voltages and drew the graph shown. Use the graph to find the resistance of the resistor.
Dr Dabour Hub Academy - figure 3
0.067 ohms (0.067 Ω)
3.75 ohms (3.75 Ω)
15 ohms (15 Ω)
30 ohms (30 Ω)
12.
Circuits A to D use identical cells and identical lamps, but the cells are arranged differently. Which list puts the lamps in order from brightest to dimmest?
Dr Dabour Hub Academy - figure 4
B, then C, then A, then D (D does not light)
A, B and C are equally bright, then D
D, then B, then A, then C
B, then A, then C, then D (D does not light)
13.
The bar chart shows how many electrons pass a point in the wire of four circuits each second. An ammeter in circuit K reads 0.60 A. What would an ammeter in circuit J read?
Dr Dabour Hub Academy - figure 5
0.20 amperes
1.80 amperes
0.40 amperes
0.80 amperes
14.
Kareem set up the circuit shown. The displays show his two meter readings. What is the resistance of the lamp?
Dr Dabour Hub Academy - figure 6
1.9 ohms (1.9 Ω)
15 ohms (15 Ω)
0.067 ohms (0.067 Ω)
5.8 ohms (5.8 Ω)
15.
Lucia started with one cell and a lamp. Every 20 s she changed the cells: she added a second cell, then a third, then turned one cell round, then opened the switch. The graph shows the current. Which statement about the change at 60 s is correct?
Dr Dabour Hub Academy - figure 7
Turning a cell round has no effect because cells push either way
The reversed cell adds to the push, but the lamp now resists more
One reversed cell cancels one forward cell, so the push equals one cell
The current fell because the lamp had used up most of the charge
16.
Use Mr Osei's water model in the table. Which change to the water model represents adding a second cell, facing the same way, in series?
Adding a second water wheel further along the pipe
Adding a second pump that pushes the same way
Opening the tap so that the water can start to flow
Adding extra water particles into the closed loop of pipe
17.
Ayesha tested four lamps and recorded the voltage across each one and the current through it. Which lamp has the highest resistance?
Lamp Y, with a resistance of 20 Ω
Lamp X, because it has the second biggest current
Lamp Z, because it has the smallest voltage
Lamp W, with a resistance of 15 Ω
18.
Four students wrote ideas about what happens in a lamp that is lit in a series circuit. Whose idea is scientifically correct?
Ines's idea
Marco's idea
Noor's idea
Tomas's idea
19.
Rashid expected his resistor to have the same resistance all through the test. Which conclusion about his results is best?
The 6.0 V reading is correct; the resistance rises to 36 Ω
The 6.0 V reading is anomalous; the resistance is 20 Ω
All readings fit; the resistance is 0.05 Ω
The 10.0 V reading is anomalous; the resistance is 16.7 Ω
20.
Which row of the table shows a way in which the water model does NOT behave like a real circuit?
Row 1 of the table
Row 2 of the table
Row 3 of the table
Row 4 of the table
21.
Salma left her circuit switched on for 10 minutes. Which statement is supported by her results?
The motor used up current, so less reached the second ammeter
The current stayed the same for the whole 10 minutes
The buzzer took more current as time went on
The current changed with time but was always equal at both points
22.
Priya investigated how the number of cells affects the current. Using her plan in the table, match a variable to its type. Which pairing is correct?
The current – dependent variable
The number of cells – control variable
The lamp used – independent variable
The current – independent variable
23.
Youssef wants to measure the push given by the cell to the charge passing through a lamp. How should he connect the meter?
A voltmeter in parallel across the lamp
A voltmeter in series next to the lamp
An ammeter in parallel across the lamp
An ammeter in series next to the cell
24.
Chen took readings of current and voltage for a lamp. He left the switch closed for 15 minutes between readings and noticed the wires felt warm. What is the best improvement?
Use a bigger range on the ammeter
Open the switch between readings
Hold the wires to cool them down
Add more cells to finish faster
25.
Two groups measured the current through the same lamp with one cell. Group 1 read 0.21 A, 0.22 A and 0.21 A. Group 2 read 0.21 A once. Why is Group 1's result more trustworthy?
They got a larger current than Group 2
Taking three readings made the lamp brighter
Only one reading can ever be accurate
Repeats show the reading is consistent
26.
When scientists first chose a direction for current, they did not know about electrons. Why do circuit diagrams still show current going from + to −, even though electrons move from − to +?
It is an agreed convention, kept so everyone draws it the same way
Positive particles flow in metal wires as well as electrons
The electrons turn round inside the cell and flow back again
Current and electrons are unrelated, so they need not match
27.
A motor has 9.0 V across it and a resistance of 18 Ω. What current flows through it?
2.0 amperes
162 amperes
27 amperes
0.50 amperes
28.
Leila wants to show her class that electrons flow round all parts of a circuit at the same moment. Which demonstration would show this best?
One lamp placed right next to the cell, lit with a short wire
A lamp that is left on until the cell completely runs down
Three lamps spread round one loop, all lighting together at the switch
Two cells placed next to each other, not joined to anything
29.
Match each quantity to its unit and the meter that measures it. Which pairing is correct?
Current – ohms, measured with an ammeter
Resistance – amps, measured with a voltmeter
Voltage – amps, measured with an ammeter
Voltage – volts, measured with a voltmeter
30.
Match each change to its effect on the current through a single lamp. Which pairing is correct?
Add a second cell facing the same way – current decreases
Swap in a lamp of higher resistance – current decreases
Turn one of two cells round – current increases
Move the ammeter to the other side – current increases
31.
Match each key term about the flow of electricity with its meaning. Which pairing is correct?
Conventional current – the flow of electrons from − to +
Terminal – the part of a wire where charge is used up
Complete circuit – an unbroken loop that charge can flow round
Ampere – the unit used to measure the push of a cell
32.
Which term is described as: negatively charged particles?
negative charge
current
electrons
terminals
33.
Which term is described as: the type of charge carried by an electron?
electrons
current
negative charge
terminals
34.
Which term is described as: connection points of a cell or battery?
electrons
current
terminals
negative charge
35.
Which term is described as: the rate of flow of electric charge?
electrons
terminals
current
negative charge
36.
The resistor in the table keeps the same resistance. When the supply is 4.5 V, the current will be _____.
0.20 amperes
0.45 amperes
0.075 amperes
0.15 amperes
37.
To measure the current in a lamp, the ammeter is connected in _____ with the lamp so that all of the charge passes through it.
parallel across it
a separate branch
series, in its loop
the opposite direction
38.
Conventional current is always drawn flowing from the _____ terminal of the cell round the circuit to the other terminal.
positive (+)
negative (−)
longest wire
nearest lamp
39.
A lamp has a resistance of 24 Ω and a current of 0.25 A. The voltage across the lamp is _____.
96 volts
6.0 volts
0.010 volts
24.25 volts
40.
Omar predicts: "If I swap an ammeter from before the lamp to after the lamp in the same series loop, the reading will fall." True or false?
False – the reading stays the same
True – the lamp has taken some current
True, but only when the lamp is bright
False – the reading will rise instead
41.
Hamza says: "When the switch is closed, the cell makes new electrons and sends them out into the wire." True or false?
True – that is where the electrons come from
True, but only from the negative terminal
False – the lamp makes the electrons instead
False – the electrons are already in the wires
42.
In the water model of electricity, a narrow pipe or a water wheel stands for a component such as a lamp, which transfers energy. True or false?
False – it stands for the cell
True – it resists the flow and transfers energy
False – it stands for the switch
True, but it also stands for the wires
43.
Current is the rate of flow of charge, so a current of 2 A means twice as much charge passes a point each second as a current of 1 A. True or false?
True – double the rate of flow of charge
False – 2 A means electrons move twice as far
False – current and charge are not linked
True, but only in a parallel circuit
44.
Farah says: "In the water model, water leaving the pump has more energy than water returning to it, just as charge leaving a cell carries more energy than charge returning." True or false?
True – energy is transferred on the way round
False – the water gains energy in the pipes
False – energy is the same at every point
True, but the water also flows faster on return
45.
An electron carries a negative charge. True or false?
True – every electron is negatively charged
False – electrons carry a positive charge
False – electrons have no charge at all
True, but only when moving in a wire
46.
Amina connects three cells in series, but one faces the opposite way. She says the lamp will be as bright as with three cells facing the same way. True or false?
True – every cell adds to the push
False – the push equals just one cell
True, if all three cells are new
False – the lamp cannot light at all
47.
Voltage is a measure of the energy given to the charge by the cell, and it is measured in volts. True or false?
True – it is the push given to the charge
False – voltage is measured in amps
False – voltage is the flow of charge
True, but it is measured with an ammeter
48.
Two identical lamps are in series with a 9.0 V battery. The voltage across each lamp is 9.0 V. True or false?
True – every lamp gets the full voltage
True, because the lamps are identical
False – each lamp has 4.5 V across it
False – each lamp has 18 V across it
49.
Bilal says: "A bigger resistance in a circuit always means a bigger current, because the charge is pushed harder." True or false?
True – resistance adds to the push
False – for the same voltage, the current is smaller
True, but only in a series circuit
False – resistance has no effect on current
50.
The electrons in a wire move from the negative terminal of the cell, through the lamp, towards the positive terminal. True or false?
False – they move from + to −
False – they stay in the cell
True, but only when the lamp is off
True – they are attracted to the + terminal
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
Part of Unit 9: Electricity — see every lesson and quiz in this unit.
Accepted payment methods