KS3 Physics Revision Questions 1 - Electricity, Magnetism, Electromagnetism
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KS3 Physics revision questions 1 - Electricity, Magnetism, Electromagnetism
Level 4 Questions
1. The diagram below shows a pen.
The pen is held up by two magnets, one in the stand and the other in the pen.
magnet in stand N
S
magnet in pen
pen
stand
(a) On the dotted lines above, label the North pole and the South pole of the magnet in the pen.
Use the letters N and S. 1 mark
Ballard School 1 (b) John put a block of metal between the two magnets as shown below.
magnet in stand N
S
block of metal
magnet in pen
stand
The block of metal became a magnet.
(i) On the dotted lines above, label the North poles and the South poles of both the block of metal and the magnet.
Use the letters N and S. 1 mark
(ii) What metal could the block be made of?
...... 1 mark
Ballard School 2 (c) John repeated the experiment using a piece of wood instead of a block of metal. The pen did not stay up. Give the reason for this.
...... 1 mark maximum 4 marks
2. (a) The diagram below shows a circuit with a two-way switch, S.
Rosie puts the switch in the position shown below.
S
R
P Q
Complete the table below to show if the bulbs are on or off. Write on or off for each bulb.
bulb on or off
P
Q
R
1 mark
(b) Give the name of the part that provides energy for the circuit.
...... 1 mark
Ballard School 3 (c) The diagrams below show a light-bulb over a staircase of a model house.
There is a two-way switch at the bottom of the stairs and another two-way switch at the top.
Under each diagram, tick one box to show if the bulb is on or off. The first one has been done for you.
on on
off off
on on
off off
2 marks maximum 4 marks
Ballard School 4 3. A compass needle is a small magnet with a North pole, N, and a South pole, S.
Ruth placed two compasses onto a piece of card. Both compass needles pointed in the direction shown below.
card
compass
N N
S S
compass needle
Ballard School 5 (a) Ruth placed a bar magnet with its South pole between the two compasses. The compass needles moved as shown below.
On the diagram below, label the North pole and South pole of each compass needle. Use the letters N and S.
bar magnet
1 mark
Ballard School 6 (b) Ruth turned the bar magnet round so that the North pole was between the two compasses.
On the diagram below, label the North pole and South pole of each compass needle now. Use the letters N and S.
bar magnet
1 mark
(c) Ruth repeated her experiment with an aluminium bar instead of a bar magnet.
What happened to the compass needles?
...... 1 mark maximum 3 marks
Ballard School 7 4. Daniel connected up the following circuit, using a battery, three bulbs and a switch.
A B
L
J K
(a) The switch is shown in position A. Which bulb is lit up?
...... … 1 mark
(b) Daniel moves the switch from position A to position B.
What, if anything, happens to bulbs J, K and L?
bulb J: ......
bulb K: ......
bulb L: ...... 2 marks
(c) Daniel uses a piece of copper wire to connect points P and Q.
copper wire A B P Q
L
J K
Ballard School 8 Which of the bulbs, if any, are lit up?
...... 1 mark Maximum 4 marks
5. 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
Ballard School 9 (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.
bulb A
bulb B bulb C bulb B
bulb C bulb A bulb D
bulb D
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
Ballard School 10 (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
Ballard School 11