AQA GCSE CHEMISTRY Higher Tier Paper 2 June 2023

AQA


GCSE
PHYSICS
Higher Tier Paper 1
May 2023

, 2
Do not write
outside the
Answer all questions in the spaces provided. box




0 1 Figure 1 shows how the National Grid connects a power station to consumers.

Figure 1




0 1 . 1 Complete the sentences.
[2 marks]


Transformer X causes the potential difference to .



Transformer X causes the current to .



Use the Physics Equations Sheet to answer questions 01.2 and 01.3.

0 1 . 2 Which equation links current (I), power (P) and resistance (R)?
[1 mark]
Tick () one box.

I
P=
R

I
P=
2
R


P=I 2R



P = IR




IB/M/Jun23/8463/1H

, 3
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outside the
0 1 . 3 A transmission cable has a power loss of 1.60 × 109 W. box



The current in the cable is 2000 A.


Calculate the resistance of the cable.
[3 marks]




Resistance = Ω




Use the Physics Equations Sheet to answer questions 01.4 and 01.5.


0 1 . 4 Write down the equation which links efficiency, total energy input and
useful energy output.
[1 mark]




0 1 . 5 The total energy input to the National Grid from one power station is 34.2 GJ.

The National Grid has an efficiency of 0.992


Calculate the useful energy output from this power station to consumers in GJ.
[3 marks]




10
Useful energy output = GJ


Turn over ►

IB/M/Jun23/8463/1H

, 4
Do not write
outside the
0 2 Figure 2 shows the equipment a student used to determine the box

specific heat capacity of iron.

The iron block the student used has two holes, one for the heater and one for
the thermometer.

Figure 2




0 2 . 1 Before the power supply was switched on, the thermometer was used to measure the
temperature of the iron block.

The student left the thermometer in the iron block for a few minutes before recording
the initial temperature.


Suggest why.
[1 mark]




IB/M/Jun23/8463/1H