OCR GCSE Combined Science A (Gateway) Physics Paper 5 Foundation June 2023 question paper J250/05

Velocity is a vector.

Which row is correct for velocity?

Which voltmeter shows a reading of 0.5 V?

The diagram shows the magnetic field around a bar magnet.

At which point is the magnetic field the weakest ?

Which substance listed in the table has the highest density ?

How much of the total mass of a hydrogen atom is made up by the nucleus?

A None of the mass

B Half of the mass

C Almost all of the mass

D All of the mass

The mass of an astronaut is 80 kg.

Calculate the weight of the astronaut on the Moon.

Use the equation: gravitational force = mass × gravitational field strength

The gravitational field strength on the Moon is 1.6 N / kg.

A 50 N

B 128 N

C 800 N

D 1280 N

The table shows the results from measuring the extension of a spring for different forces.

Calculate the spring constant of the spring.

Use the equation: force exerted by a spring = extension × spring constant

A 0.045 N / m

B 0.060 N / m

C 0.72 N / m

D 18 N / m

Which new feature of the atomic model did Niels Bohr suggest?

A Electrons are in stable shells.

B Electrons orbit a nucleus.

C The atom has a nucleus.

D The nucleus is positive.

Two rooms have the same fixed volume. They contain identical gases at the same pressure.

Room H is at a higher temperature than room L.

Which statement is correct?

A The particles are moving at the same speed in both rooms.

B The particles are moving faster in room H.

C The particles are moving faster in room L.

D The particles are not moving in either room.

Draw lines to connect each circuit component with its correct symbol.

Circuit component
Symbol

The potential difference across a 3 resistor is 4.5 V.

Calculate the current in the resistor.

Use the Equation Sheet.

A teacher connects the circuit in Fig. 11.2. Fig. 11.2

Both lamps are lit. The teacher then removes lamp A from its holder but leaves the rest of the circuit unchanged.

Describe what happens. Give a reason for your answer.

The teacher connects the circuit in Fig. 11.3. Fig. 11.3

Both lamps are lit. The teacher then removes lamp A.

Describe what happens. Give a reason for your answer.

The graph shows how the current in a resistor changes when the potential difference across the resistor changes.

Which two statements about the graph are correct?

Tick (✓) two boxes.

A student does an experiment to measure the power rating of a Bunsen burner.

The diagram shows their experiment.

This is the method they follow:

• Pour 0.2 kg of water into a beaker.

• Increase the temperature of the water using the Bunsen burner.

• Measure the time taken for the temperature of the water to increase by 50 °C.

Suggest a way to measure the time taken.

The mass of the water is 0.2 kg. The temperature change is 50 °C.

The specific heat capacity of water is 4200 J / kg °C.

Calculate the thermal energy transferred to the water.

Use the Equation Sheet.

The student repeats the experiment. They say that the energy transferred by the Bunsen burner is 40 000 J after 200 s.

Calculate the power of the Bunsen burner.

Another student repeats the experiment for two Bunsen burners A and B.

The graph shows the time taken for the temperature of 0.2 kg of water to increase by 50 °C.

The student says, ‘Bunsen burner A has the highest power.’

Explain how the graph shows this.

The manufacturer says, ‘The line on the graph for Bunsen burner B is not accurate. The power of the Bunsen burners should be the same.’

Both Bunsen burners are working correctly.

What did the student do wrong when testing Bunsen burner B ?

Tick (✓) one box.

A boy and a girl walk from their house to a shop. They walk there in different ways.

The distance–time graph shows their motion.

How long does the boy stop for during the walk?

The boy and girl are at the same distance from the house when they are at the shop.

At what other time are the boy and girl at the same distance from the house?

Calculate the boy’s average speed for the whole journey.

Use the Equation Sheet.

Give your answer to 2 significant figures.

Average speed =........ m / s

The girl walks back to the house. She accelerates for part of the journey.

Which distance–time graph describes her motion for this part of her journey?

Tick (✓) one box.

The girl’s change in velocity is 1.2 m / s. The time taken is 3 seconds.

Calculate the girl’s acceleration.

Acceleration =........ m / s²

The free body force diagram shows how the girl accelerates as she walks along the

What is the name of force X ?

Tick (✓) one box.

14* An electromagnet can be made from a coil of wire and a soft iron core.

A student investigates how the strength of an electromagnet varies with the number of turns.

Fig. 14.1 shows the electromagnet and Fig. 14.2 shows a graph of the results.

Fig. 14.1
Fig. 14.2

Describe how the experiment is done using Fig. 14.1.

Explain what the graph in Fig. 14.2 tells us.

A positively charged rod is rubbed across the brass cap of the gold leaf electroscope.

Complete the sentence to explain how the gold leaf electroscope becomes positively charged.

Use words from the list.

Electrons Gold leaf electroscope Neutrons Protons

Positively charged rod

........ move from the........ to the........

When the gold leaf electroscope is positively charged, the gold leaf rises.

Fig. 15.2 shows the positively charged gold leaf electroscope.

Fig. 15.2

Explain why the gold leaf rises.

A scientist earths the cap of the positively charged gold leaf electroscope by touching it with their finger.

Complete Fig. 15.3 to show what happens to the gold leaf. Explain your answer.

Fig. 15.3

A student measures the acceleration due to gravity by dropping a ball through a light gate.

The diagram shows the experiment.

Draw lines to match each source of error in the experiment to the correct way to remove the error.

Source of error
Way to remove the error

The light gate and computer are used to calculate the final velocity of the ball.

What information does the student have to enter into the computer?

The computer displays a final velocity of 7.2 m / s when the student drops the ball from 2.7 m.

Calculate a value for the acceleration due to gravity.

Use the equation: (final velocity)² – (initial velocity)² = 2 × acceleration × distance

Acceleration due to gravity =........ m / s²