Oxford Cambridge and RSA
H
Tuesday 23 November 2021 – Morning
GCSE (9–1) in Combined Science B
(Twenty First Century Science)
J260/07 Physics (Higher Tier)
Time allowed: 1 hour 45 minutes
* 8 3 5 0 3 7 4 8 9 5 *
You must have:
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Combined Science
(Physics) B (inside this document)
You can use:
• an HB pencil
• a scientific or graphical calculator
* J 2 6 0 0 7 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 95.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 20 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2021 [601/8690/2] OCR is an exempt Charity
DC (KS/FC) 300871/5 Turn over
, 2
Answer all the questions.
1 Nina has an electric car. It has a rechargeable battery. She plugs it into a charger at home to
recharge it overnight.
(a) The charger has a power rating of 7 kW.
(i) Calculate the total energy transferred when Nina charges the battery for 7.5 hours.
Give your answer in kW h.
Total energy transferred = ................................................ kW h [3]
(ii) The charging increases the energy stored in the battery by 48.3 kW h.
Calculate the efficiency of the charger.
Give your answer as a percentage.
Efficiency = .................................................... % [3]
(iii) The domestic electricity supply voltage is alternating voltage, but the battery voltage is
direct voltage.
What is the difference between alternating voltage and direct voltage?
...........................................................................................................................................
..................................................................................................................................... [1]
© OCR 2021
, 3
(b) The graph shows the number of cars and vans in the U.K. that could be plugged in and
charged, from 2011 to 2018.
350 000
300 000
250 000
Plug-in cars 200 000
and vans in
the U.K. 150 000
100 000
50 000
0
2011 2012 2013 2014 2015 2016 2017 2018 2019
Year
(i) Complete the graph by drawing a curve of best fit. [1]
(ii) Use the graph to estimate the number of plug-in cars and vans in the U.K. in 2019.
Estimated number of plug-in cars and vans = ......................................................... [1]
(c) (i) Suggest one reason why the number of plug-in cars and vans in the U.K. is increasing.
...........................................................................................................................................
..................................................................................................................................... [1]
(ii) Suggest two problems for the electricity supply industry if all petrol cars in the U.K. are
replaced by electric cars that are plugged in overnight.
1 ........................................................................................................................................
...........................................................................................................................................
2 ........................................................................................................................................
...........................................................................................................................................
[2]
© OCR 2021 Turn over
H
Tuesday 23 November 2021 – Morning
GCSE (9–1) in Combined Science B
(Twenty First Century Science)
J260/07 Physics (Higher Tier)
Time allowed: 1 hour 45 minutes
* 8 3 5 0 3 7 4 8 9 5 *
You must have:
• a ruler (cm/mm)
• the Data Sheet for GCSE (9–1) Combined Science
(Physics) B (inside this document)
You can use:
• an HB pencil
• a scientific or graphical calculator
* J 2 6 0 0 7 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 95.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 20 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2021 [601/8690/2] OCR is an exempt Charity
DC (KS/FC) 300871/5 Turn over
, 2
Answer all the questions.
1 Nina has an electric car. It has a rechargeable battery. She plugs it into a charger at home to
recharge it overnight.
(a) The charger has a power rating of 7 kW.
(i) Calculate the total energy transferred when Nina charges the battery for 7.5 hours.
Give your answer in kW h.
Total energy transferred = ................................................ kW h [3]
(ii) The charging increases the energy stored in the battery by 48.3 kW h.
Calculate the efficiency of the charger.
Give your answer as a percentage.
Efficiency = .................................................... % [3]
(iii) The domestic electricity supply voltage is alternating voltage, but the battery voltage is
direct voltage.
What is the difference between alternating voltage and direct voltage?
...........................................................................................................................................
..................................................................................................................................... [1]
© OCR 2021
, 3
(b) The graph shows the number of cars and vans in the U.K. that could be plugged in and
charged, from 2011 to 2018.
350 000
300 000
250 000
Plug-in cars 200 000
and vans in
the U.K. 150 000
100 000
50 000
0
2011 2012 2013 2014 2015 2016 2017 2018 2019
Year
(i) Complete the graph by drawing a curve of best fit. [1]
(ii) Use the graph to estimate the number of plug-in cars and vans in the U.K. in 2019.
Estimated number of plug-in cars and vans = ......................................................... [1]
(c) (i) Suggest one reason why the number of plug-in cars and vans in the U.K. is increasing.
...........................................................................................................................................
..................................................................................................................................... [1]
(ii) Suggest two problems for the electricity supply industry if all petrol cars in the U.K. are
replaced by electric cars that are plugged in overnight.
1 ........................................................................................................................................
...........................................................................................................................................
2 ........................................................................................................................................
...........................................................................................................................................
[2]
© OCR 2021 Turn over
