Name: ________________________
Y7 Electricity Revision
Class: ________________________
Date: ________________________
Time: 25 minutes
Marks: 36 marks
Comments:
Page 1 of 20
Q1.
(a) Draw a line from each circuit symbol below to the correct name.
Draw only four lines.
circuit symbol name
3 marks
(b) Fred made circuit 1 as shown below.
Give the name of the part that is the energy source for the circuit.
.........................................................
1 mark
(c) Fred then made circuit 2 as shown below.
Page 2 of 20
In the table below, tick a box to show whether circuit 1 and circuit 2 are series or
parallel circuits.
Tick only two boxes.
series parallel
circuit 1
circuit 2
1 mark
(d) What metal is usually used for wires in electric circuits?
...........................................................
1 mark
maximum 6 marks
Q2.
(a) Draw a line from each electrical circuit to the correct circuit diagram.
Draw only four lines.
electrical circuit circuit diagram
Page 3 of 20
2 marks
(b) In each circuit below, bulb 1 breaks and goes off.
Under each circuit diagram below, tick the correct boxes to show if bulb 2 and
bulb 3 are on or off.
Page 4 of 20
circuit A circuit B
2 marks
(c) Give the name of the part that provides energy for each circuit.
........................................................
1 mark
(d) Why is copper used for wires in a circuit?
Tick the correct box.
1 mark
maximum 6 marks
Q3.
(a) Max built circuit 1 as shown below.
Page 5 of 20
circuit 1
He closed the switch, S, and all the bulbs came on.
One of the bulbs then broke and all the bulbs went off.
Which bulb must have broken?
Give the letter.
...............
1 mark
(b) Max built circuit 2 as shown below.
He connected a plastic comb and a metal key in different parts of the circuit.
circuit 2
Look carefully at circuit 2.
Complete the table below to show which bulbs in circuit 2 will be on or off when
different switches are open or closed.
Write on or off in the boxes below.
switch 1 switch 2 bulb P bulb Q bulb R
open open off off off
Page 6 of 20
open closed
closed open
2 marks
(c) Max built circuit 3 using a battery, two bulbs and three ammeters.
circuit 3
The current reading on ammeter A1 was 0.8 amps.
What would be the reading on ammeters A2 and A3?
Place one tick in the table by the correct pair of readings.
readingon reading on correct pair
ammeter A2 (amps) ammeter A3 (amps) of readings
0.8 0.8
0.8 0.4
0.4 0.8
0.4 0.4
1 mark
maximum 4 marks
Q4.
Nikki tries to set up four electric circuits.
Page 7 of 20
diagram 1
(a) In diagram 1 the ammeter reading is zero. What is wrong with this circuit?
.....................................................................................................................
.....................................................................................................................
1 mark
diagram 2
(b) In diagram 2 the ammeter reading is zero. What is wrong with this circuit?
.....................................................................................................................
.....................................................................................................................
1 mark
diagram 3
(c) In diagram 3 the ammeter reading is zero. Why is this not a complete circuit?
.....................................................................................................................
.....................................................................................................................
1 mark
Page 8 of 20
diagram 4
(d) In diagram 4, why is there a reading on the ammeter?
.....................................................................................................................
.....................................................................................................................
1 mark
Maximum 4 marks
Q5.
Alice connects four light bulbs for her model house, as shown. She puts the bulbs into the
holes in the back wall.
(a) When Alice turns the switch on, the bulbs do not light up. The batteries are not flat.
None of the bulbs is broken.
Why do the bulbs not light up?
......................................................................................................................
1 mark
(b) Alice makes the circuit work. When she turns the switch on, the bulbs are not
very bright.
What must Alice add to the circuit to make the bulbs brighter?
......................................................................................................................
1 mark
Page 9 of 20
(c) The four bulbs in the circuit are the same. Which statement is correct?
Tick the correct box.
Each bulb is the Each bulb is a
same brightness. different brightness.
The bulbs at the The bulbs at the
top are brighter. bottom are brighter.
1 mark
The diagrams show two ways to write the model house.
circuit 1 circuit 2
(d) (i) In circuit 1, bulb B breaks and goes out.
What happens to the other bulbs in this circuit?
.............................................................................................................
.............................................................................................................
1 mark
(ii) In circuit 2, bulb C breaks and goes out.
What happens to the other bulbs in this circuit?
.............................................................................................................
.............................................................................................................
1 mark
(e) In circuit 2, Alice adds another switch so that she can turn bulb A off while the
other bulbs stay on.
Write the letter S on circuit 2 to show where Alice should add the switch.
1 mark
Maximum 6 marks
Q6.
Jo uses a battery, a switch and a bulb to make a series circuit.
Page 10 of 20
(a) The diagrams show symbols for a battery, a bulb and a switch.
Connect the symbols to make Jo’s circuit.
1 mark
(b) Jo closes the switch and the bulb lights up. Then she connects the battery the
other way round.
What happens to the bulb when Jo closes the switch again?
Tick the correct box.
It is brighter. It is dimmer.
It is the same brightness. It does not light up.
1 mark
(c) A corridor has a switch at each end and one light bulb in the middle.
The circuit diagram below shows how they are connected.
In the diagram above, the switches are shown in positions B and D and the bulb
is on. Complete the table below to show whether the light bulb is on or off. Write
on or off.
Page 11 of 20
1 mark
(d) The circuit is changed so that there is a bulb at each end of the corridor.
They are connected as shown below.
(i) In the diagram above, the switches are shown in positions B and C.
Which bulbs, if any, are on?
.............................................................................................................
1 mark
(ii) The switches are arranged so that both bulbs are on. Bulb X breaks.
What, if anything, happens to bulb Y?
.............................................................................................................
1 mark
Maximum 5 marks
Q7.
Peter measured the current through each of three similar bulbs in a parallel circuit.
Page 12 of 20
He had only one ammeter and he placed it first at A1, then A2, then A3, in order to
measure the currents.
The table shows his results.
position of ammeter current, in amps
A1 0.14
A2 0.16
A3 0.15
(a) He expected the current readings to be the same for each bulb but found they were
different.
Suggest two reasons why the readings were different.
1. ................................................................................................................
2. ................................................................................................................
2 marks
(b) Peter then measured the current at A4 and recorded it as 0.45 A. He concluded
that the current at A4 could be calculated by adding together the currents
through each of the bulbs at positions A1, A2 and A3.
He added two more similar bulbs to his circuit, in parallel. The current through
each bulb was 0.15 A.
Page 13 of 20
Use Peter's conclusion to predict the current at A4 with the 5 bulbs in the circuit.
................ A
1 mark
(c) Peter left the circuit connected overnight. He used a datalogger to measure the
current at position A4 at regular intervals of time. The next morning the bulbs were
dim.
Using the axes below, sketch (do not plot) how the current at position A4 might
change with time.
Indicate on the graph:
(i) The correct labels for each axis, including the correct units.
(ii) The shape of the graph you would expect to obtain.
2 marks
Maximum 5 marks
Page 14 of 20
Mark schemes
Q1.
(a)
all four lines are required for three marks
any three lines are required for two marks
any two lines are required for one mark
if more than one line is drawn from a symbol,
do not give credit for that symbol
3 (L4)
(b) battery
accept ‘cell’ or ‘cells’
accept ‘power supply’ or ‘power pack’
1 (L4)
(c)
series parallel
circuit 1
circuit 2
both ticks are required for one mark
if more than one box is ticked in any row, award no mark
1 (L4)
(d) copper
accept ‘aluminium’
accept ‘gold’
do not accept any other metal
Page 15 of 20
1 (L4)
[6]
Q2.
(a) •
award two marks for all four correct lines
award one mark for any two or three correct lines
if more than one line is drawn from any box,
do not credit either line
2 (L3)
(b) • off
off
both ticks are required for the mark
if more than one box is ticked in any row, award no mark
1 (L3)
• on
on
both ticks are required for the mark
if more than one box is ticked in any row, award no mark
1 (L4)
(c) • battery
accept ‘cell’ or ‘cells’
1 (L4)
(d) • Copper is a good conductor of electricity.
if more than one box is ticked, award no mark
1 (L3)
[6]
Page 16 of 20
Q3.
(a) • E
1 (L5)
(b)
P Q R
off off off
• on off on
• off off off
award one mark for each correct row
2 (L5)
(c) • * 0.8 0.8
if more than one box is ticked, award no mark
1 (L6)
[4]
Q4.
(a) there is a wire missing between the battery and the bulb
accept ‘there is a wire missing’
or ‘the bulb is not connected to the battery’
accept ‘it is not a complete circuit’
or ‘the circuit is broken’
1 (L3)
(b) two wires are connected to one end of the battery
accept ‘the battery is wrongly connected’
accept ‘the battery is not in the circuit’
accept ‘the circuit is wrongly connected’
do not accept ‘there is an incomplete circuit’
1 (L3)
(c) the bulb is broken or blown
do not accept ‘the circuit is not complete’
do not accept ‘because the light is not on’
1 (L3)
(d) the circuit is connected correctly
accept ‘it is set up right’
accept ‘there is a current’
accept ‘there is a complete circuit or path’
1 (L3)
[4]
Q5.
(a) any one from
• the circuit is not complete
Page 17 of 20
accept ‘there is no circuit’
• a wire is missing
• two of the bulbs are not connected
accept ‘the bulbs are not connected’
do not accept ‘the switch might be broken’
or ‘there is a loose connection’
1 (L3)
(b) another cell or battery
accept ‘put the bulbs in parallel’
or ‘make a parallel circuit’
or ‘use new batteries’
do not accept ‘use stronger batteries’
1 (L5)
(c) Each bulb is the same brightness.
if more than one box is ticked, award no mark
1 (L4)
(d) (i) they go out
accept ‘they stop working’
do not accept ‘they get dimmer’
1 (L3)
(ii) any one from
• they stay on or stay the same
accept ‘they get brighter’
• they do not go out
accept ‘only the broken bulb goes out’
• nothing
1 (L4)
(e) a letter S drawn onto or close to the wire in the top part of the circuit
anywhere between the two junctions
accept an open switch symbol drawn onto the diagram
do not accept a letter S drawn mid-way between the top two
wires or at a junction between the top two wires as shown
below
1 (L4)
[6]
Page 18 of 20
Q6.
(a) three wires are drawn:
all three wires are required for the mark all three
components
must be correctly connected for the mark
accept a correct circuit diagram in which the pupil
has drawn the symbols instead of connecting the
printed symbols
1 (L3)
(b) It is the same brightness.
if more than one box is ticked, award no mark
1 (L3)
(c)
position of position of is the bulb
switch 1 switch 2 on or off?
B D on
A D off
A C on
both answers are required for the mark
1 (L4)
(d) (i) neither or none
accept ‘nothing’ or ‘it works’
1 (L4)
(ii) it stays on
accept ‘it gets brighter’
1 (L4)
[5]
Q7.
(a) any two from:
• manufacturing differences or bulbs are different
accept ‘different resistances’
accept ‘different ages’
Page 19 of 20
• reading error
• dirty contacts
accept ‘bulbs were not screwed in properly’
• unreliable or inaccurate meter
accept ‘faulty ammeter’
accept ‘different wires’ or ‘differences in the wires’
2 (L6)
(b) 0.75
1 (L6)
(c)
both axes must be labelled correctly with
both the variable and the unit
Y axis : current, in amps or A or milliamps or mA
accept ‘I , in amps’
X axis : time, in hours or minutes or seconds
accept ‘t, in hours’
1 (L7)
a line or curve from top left to bottom right
1 (L7)
[5]
Page 20 of 20
