AQA GCSE Trilogy Physics Paper 1 Foundation June 2022 question paper 8464/P/1F

A student investigated how the potential difference across a filament lamp affects the current in the lamp.

Figure 1 shows the circuit the student used.

Figure 2 shows a circuit symbol.

What component does the symbol represent?

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Which component from Figure 1 did the student use to adjust the potential difference across the lamp?

When the voltmeter was not connected to the circuit it gave a reading of 0.4 volts.

How can the student correct all the readings taken from the voltmeter?

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The student recorded three values of current for each potential difference.

Table 1 shows the results for 2.5 volts.

Calculate the mean current in the lamp.

Calculate the power of the lamp when the potential difference across the lamp was 4.8 V

The current in the lamp was 0.75 A

Use the equation:

power = potential difference × current

Calculate the resistance of the lamp when the potential difference across the lamp was 4.8 V

The current in the lamp was 0.75 A

Use the equation:

Complete the sentence.

Choose answers from the box.

Each answer may be used once, more than once or not at all.

Increasing the current in a filament lamp makes the temperature

Which graph shows the relationship between potential difference and current for a filament lamp?

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Figure 3 shows a lift near the bottom of a building.

The lift is attached by a cable to a counterweight.

An electric motor moves the lift.

The lift is moving up.

As the lift moves up, how far does the counterweight move down?

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What happens to the gravitational potential energy of the counterweight as it moves down?

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Calculate the change in gravitational potential energy of the lift when it moves up 4.0 m

The mass of the lift is 1300 kg

gravitational field strength = 9.8 N/kg

Use the equation:

gravitational potential energy = mass × gravitational field strength × height

Complete the sentences.

Choose answers from the box.

Friction between the brakes and the cable causes the speed of the lift to decrease.

energy of the lift.

energy of the brakes.

The motor transfers different amounts of energy each time people use the lift.

Which factors affect the amount of energy transferred by the motor as the lift moves?

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The weight of the lift and the counterweight stretch the cable by 0.015 m

The cable acts like a spring with a spring constant of 880 000 N/m

Calculate the elastic potential energy of the stretched cable.

Use the equation:

elastic potential energy = 0.5 × spring constant × (extension)²

A lift system using a counterweight is more efficient than a lift system that does not use a counterweight.

How does having a more efficient system affect the energy transferred by the motor?

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A teacher demonstrated that the radioactive isotope americium-241 emits alpha particles.

Figure 4 shows the equipment used.

An americium-241 nucleus (Am) emits an alpha particle and turns into a neptunium nucleus (Np).

Which is the correct nuclear equation for this decay?

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What is the furthest distance that alpha radiation can travel in air?

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The teacher placed a piece of paper between the americium-241 and the radiation detector.

The reading on the count rate meter decreased by a large amount.

Why does the decreased reading show that americium-241 emits alpha radiation?

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The teacher replaced the americium-241 with a source of beta radiation.

Which symbol represents a beta particle?

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The count rate from the source was 119 ± 7 counts per second.

Calculate the smallest count rate this could have been.

A teacher investigated how the distance between a different radioactive source and the detector affects the count rate.

Draw one line from each type of variable to the description.

Figure 5 shows how the count rate from the different radioactive source changed with the distance from the source.

Describe the relationship between the distance from the source and the count rate.

Figure 6 shows a swimmer wearing a wetsuit.

The wetsuit helps to keep the swimmer warm.

A student wrapped a thermometer in a piece of wetsuit material and placed the thermometer in water containing ice.

Figure 7 shows the apparatus.

After 30 seconds in the water the temperature of the thermometer had decreased by 7.5 °C

Calculate the average decrease in temperature each second.

The student recorded the temperature of the thermometer after 30 seconds for four materials. Each piece of material was the same size and thickness.

In each test the starting temperature of the thermometer was 21.0 °C

Table 2 shows the results.

Complete Figure 8 using the data in Table 2.

You should:

• label the y-axis

• draw the bars for materials Y and Z.

Which material is the best thermal insulator?

Give a reason for your answer.

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The student tested a new material with a greater thermal conductivity than material Z.

The piece of new material was the same size and thickness as the piece of material Z.

What was the temperature of the thermometer after 30 seconds?

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During the investigation 0.0150 kg of the ice melted. The temperature of the water and ice did not change.

specific latent heat of fusion of ice = 334 000 J/kg

Calculate the energy needed to melt the ice.

Use the equation:

energy to melt the ice = mass × specific latent heat

The student wanted to determine the density of a wetsuit material.

The student measured the length of one side of a cube of wetsuit material with:

• a micrometer

• a ruler.

Table 3 shows the results.

Complete the sentence.

Choose the answer from the box.

The results show that compared to the ruler the micrometer has a higher

Use the Physics Equations Sheet to answer questions 04.7 and 04.8.

Write down the equation that links density (ρ), mass (m) and volume (V).

The student calculated the volume of the cube of wetsuit material to be 0.186 cm³

The density of the cube was 0.300 g/cm³

Calculate the mass of the cube.

Give your answer in grams.

Figure 9 shows some of the energy resources used to meet the demand for electrical power in the UK on one day in 2020.

The maximum demand for electrical power on that day was at 6 pm.

Determine the percentage of the maximum demand for electrical power that was generated using gas.

The UK government wants to reduce carbon emissions as much as possible.

Which energy resources need to be used less to achieve this?

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A network of transformers and transmission cables transfers electrical power from

power stations to consumers.

What is this network called?

Explain how using step-up transformers makes the network efficient.

A student made measurements to determine the specific heat capacity of vegetable oil.

Figure 10 shows the equipment used.

Describe how the student could use the equipment shown in Figure 10 to determine the specific heat capacity of vegetable oil.

Give one risk when using the equipment in Figure 10.

A different student did not have a joulemeter and calculated the energy transferred by the electric heater.

Use the Physics Equations Sheet to answer questions 06.3 and 06.4.

Write down the equation linking energy transferred (E), power (P) and time (t).

The electric heater had a power output of 50 watts.

Calculate the time taken for the electric element to transfer 4750 joules of energy to the vegetable oil.

In a deep fryer, vegetable oil is heated by an electric heating element. Food is then cooked in the hot vegetable oil.

The deep fryer contains an electrical component to monitor the temperature of the vegetable oil.

Figure 11 shows how the resistance of this electrical component changes with temperature.

What electrical component is used to monitor the temperature of the vegetable oil?

The electric heating element in the deep fryer automatically switches off when the vegetable oil reaches a certain temperature.

Figure 12 shows how the temperature of the vegetable oil changed after the deep fryer was switched on.

Determine the resistance of the electrical component when the electric heating element automatically switched off.

Use Figure 11 and Figure 12.

Some chips were put in the deep fryer.

In the deep fryer, water in the chips underwent a physical change and became steam.

Why is this a physical change?

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