Cambridge Assessment International Education
Cambridge International Advanced Subsidiary and Advanced Level
* 2 1 6 3 8 6 5 0 8 0 *
PHYSICS 9702/52
Paper 5 Planning, Analysis and Evaluation February/March 2019
1 hour 15 minutes
Candidates answer on the Question Paper.
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams or graphs.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
Electronic calculators may be used.
You may lose marks if you do not show your working or if you do not use appropriate units.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
This document consists of 8 printed pages.
DC (CE/SG) 163590/3
© UCLES 2019 [Turn over
, 2
1 A student is investigating the behaviour of a capacitor-resistor circuit as shown in Fig. 1.1.
R
C
input output
Fig. 1.1
A neon lamp flashes on and off when it is connected across the capacitor with a potential difference
VF across the lamp of approximately 90 V.
The student has a number of unmarked resistors.
It is suggested that the period T of the flashes of the lamp is related to the resistance R of the
resistor by the expression
T = RCK
where C is the capacitance of the capacitor and K is a constant.
The constant K is given by
Vi – VL
K = ln V – V
i F
where Vi is the potential difference across the input, VF is the potential difference required to make
the lamp flash and VL is a constant.
Design a laboratory experiment to test the relationship between T and R.
Explain how your results could be used to determine a value for K and VL.
You should draw a diagram, on page 3, showing the arrangement of your equipment. In your
account you should pay particular attention to:
• the procedure to be followed
• the measurements to be taken
• the control of variables
• the analysis of the data
• any safety precautions to be taken.
© UCLES 2019 9702/52/F/M/19
, 3
Diagram
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© UCLES 2019 9702/52/F/M/19 [Turn over
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© UCLES 2019 9702/52/F/M/19
Cambridge International Advanced Subsidiary and Advanced Level
* 2 1 6 3 8 6 5 0 8 0 *
PHYSICS 9702/52
Paper 5 Planning, Analysis and Evaluation February/March 2019
1 hour 15 minutes
Candidates answer on the Question Paper.
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams or graphs.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
Electronic calculators may be used.
You may lose marks if you do not show your working or if you do not use appropriate units.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
This document consists of 8 printed pages.
DC (CE/SG) 163590/3
© UCLES 2019 [Turn over
, 2
1 A student is investigating the behaviour of a capacitor-resistor circuit as shown in Fig. 1.1.
R
C
input output
Fig. 1.1
A neon lamp flashes on and off when it is connected across the capacitor with a potential difference
VF across the lamp of approximately 90 V.
The student has a number of unmarked resistors.
It is suggested that the period T of the flashes of the lamp is related to the resistance R of the
resistor by the expression
T = RCK
where C is the capacitance of the capacitor and K is a constant.
The constant K is given by
Vi – VL
K = ln V – V
i F
where Vi is the potential difference across the input, VF is the potential difference required to make
the lamp flash and VL is a constant.
Design a laboratory experiment to test the relationship between T and R.
Explain how your results could be used to determine a value for K and VL.
You should draw a diagram, on page 3, showing the arrangement of your equipment. In your
account you should pay particular attention to:
• the procedure to be followed
• the measurements to be taken
• the control of variables
• the analysis of the data
• any safety precautions to be taken.
© UCLES 2019 9702/52/F/M/19
, 3
Diagram
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© UCLES 2019 9702/52/F/M/19
