Combined Science A (Gateway) · OCR J250 · Physics Paper 5 · Foundation · June 2024
Objects can be charged by rubbing them with a cloth.
The diagram shows a plastic rod which has become charged.
Which statement correctly describes the plastic rod?
A The rod has an overall negative charge.
B The rod has an overall positive charge.
C The rod has gained neutrons.
D The rod has gained protons.
[1]
A spring has a spring constant of 20 N / m and its extension is 0.4 m.
What is the force exerted on the spring?
Use the equation: force exerted by a spring = extension × spring constant
A 0.8 N
B 5.0 N
C 8.0 N
D 20.4 N
[1]
Which two instruments are used to measure the density of a rectangular glass block?
A A measuring cylinder and a ruler
B A protractor and a ruler
C A protractor and an electronic balance
D A ruler and an electronic balance
[1]
A car changes velocity by 14 m / s in 3.5 s.
What is the acceleration of the car?
0.25 m / s2 A
4.0 m / s2 B
10.5 m / s2 C
17.5 m / s2 D
[1]
An object of mass 2.0 kg accelerates. The force acting on the object is 5.0 N.
Calculate the acceleration of the object.
Use the equation: force = mass × acceleration
0.4 m / s2 A
2.5 m / s2 B
3.0 m / s2 C
10.0 m / s2 D
[1]
A student stretches four different springs as shown in the table.
The student measures the length of each spring:
• before the stretching force is applied
• during the time that the stretching force is applied
• after the stretching force has been removed.
Which spring shows plastic deformation?
| Length before (cm) | Length during (cm) | Length after (cm) | |
| A | 2.4 | 2.9 | 2.4 |
| B | 2.5 | 5.0 | 2.5 |
| C | 2.5 | 2.9 | 2.9 |
| D | 2.6 | 2.6 | 2.6 |
[1]
The resistors shown in A, B, C and D are identical.
Which arrangement has the smallest resistance?
[1]
The diagram shows some forces acting on a moving object.
Which statement describes the motion of the object?
A The object accelerates towards E.
B The object accelerates towards W.
C The object changes direction.
D The object moves at constant velocity.
[1]
Different scientists have contributed to the model of the atom.
What is the order of each scientist’s contribution from the oldest to the newest?
A Bohr, Rutherford, Thomson
B Rutherford, Bohr, Thomson
C Thomson, Bohr, Rutherford
D Thomson, Rutherford, Bohr
[1]
This question is about magnetic fields.
Fig. 11.1 shows a diagram of a measuring instrument.
Fig. 11.1
What information does the instrument in Fig. 11.1 give us about the core of the Earth?
[1]
Describe how you can use iron filings to show the shape of the magnetic field pattern around wire B.
[2]
Draw the shape and direction of the magnetic field pattern around wire B on Fig. 11.2.
[3]
Solenoids can be used to produce magnetic fields.
Fig. 11.3 shows the current and the number of turns of wire in four different solenoids A, B, C and D.
Fig. 11.3
The solenoids are all made of the same material using wires of equal thickness.
Which solenoid has the strongest magnetic field?
Give a reason for your answer.
[2]
This question is about how electrical circuits work.
A student builds three different electrical circuits.
Explain why the lamp does not light in each circuit.
Fig. 12.1 shows the first circuit.
Fig. 12.1
The lamp does not light because........
[1]
Fig. 12.2 shows the second circuit.
Fig. 12.2
The lamp does not light because........
[1]
Fig. 12.3 shows the third circuit.
Fig. 12.3
The lamp does not light because........
[1]
The student uses the meters in the circuit in Fig. 12.4 to determine the resistance of a resistor.
Fig. 12.4
The student uses the circuit to take several readings of current and potential difference. The graph shows the student’s results.
Complete the sentence about the graph to explain the relationship between potential difference and current. Use words from the list.
decreases increases stays the same
As the potential difference increases, the current........
[1]
The ratio of potential difference: current at 3 V is 15: 1.
Calculate the ratio of potential difference: current at 6 V. Use the graph.
[1]
Complete the sentence about the graph. Use a word from the list.
elastic linear non-linear plastic
The graph of current against potential difference for the resistor is........
[1]
This diagram shows a cell connected in series with a resistor.
Calculate the potential difference of the cell in the diagram.
Use the equation: potential difference = current × resistance
[2]
A teacher wants to measure the specific latent heat of ice.
The diagram shows the equipment the teacher uses.
Here are some steps in the method for this experiment. The steps are not in the correct order.
Write numbers in the boxes next to each step to show the correct order. One is already done for you.
[1]
In one set of results 0.006 kg of ice melts.
Calculate the weight of the ice that melts.
Gravitational field strength = 10 N / kg
Use the equation: gravitational force = mass × gravitational field strength
[2]
The heater is turned on for 150 seconds.
The power of the heater is 15 W.
Calculate the energy transferred by the heater.
Use the equation: energy transferred = power × time
[2]
In another set of results 0.015 kg of ice melts.
The energy transferred by the heater is 5010 J.
Calculate the specific latent heat of ice.
Use the Equation Sheet.
Specific latent heat of ice =........ J / kg
[3]
14* A crane lifts a block straight upwards. Fig. 14.1 shows the forces acting on the block. The size of these forces may change during its journey.
Fig. 14.1
Fig. 14.2 shows the velocity-time graph for the block during a part of its journey.
Fig. 14.2
Use Fig. 14.1 and Fig. 14.2 to:
• Describe how the velocity of the block changes from point A to point E.
• Describe how the resultant force on the block changes from point A to point E.
[6]
The distance-time graph shows the journey of a car.
Calculate the average speed of the car.
Use the graph and the equation: distance travelled = speed × time
Average speed =........ m / s
[4]
Two students do an experiment to measure their power by walking up steps.
This is the data from student P:
• Weight = 600 N
• Number of steps = 250
• Height of each step = 0.20 m
Calculate the work done by student P.
[3]
This is the data from student Q:
• Work done = 36 000 J
• Time taken = 240 s
Calculate the power of student Q.
Give your answer in kW.
[3]
Describe how the students carry out this experiment. Include any equipment they use.
[3]
Student P carries out the experiment five more times and calculates their power.
Here are student P ’s results.
| Try 1 | Try 2 | Try 3 | Try 4 | Try 5 | |
| Power (W) | 120 | 121 | 122 | 121 | 123 |
How can student P ’s results be described?
Tick one (✓) box in each row.
[1]
Explain your answer to (d)(i).
[2]
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