Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
PHYSICS
Paper 3
Section B Electronics
Monday 8 June 2026 Morning Time allowed:
Time TBCThe total time for
both sections of this paper is
Materials 2 hours. You are advised to
For this paper you must have:
• a pencil and a ruler spend approximately
• a scientific calculator 50 minutes on this section.
• a Data and Formulae Booklet
• a protractor.
Instructions For Examiner’s Use
• Use black ink or black ball-point pen.
Question Mark
• Fill in the boxes at the top of this page.
• Answer all questions. 1
• You must answer the questions in the spaces provided. Do not write 2
outside the box around each page or on blank pages.
3
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s). 4
• Do all rough work in this book. Cross through any work you do not want 5
to be marked.
TOTAL
• Show all your working.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 35.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
*jun2674083BE01*
IB/M/Jun26/G4007/V11 7408/3BE
, 2
Do not write
outside the
Section B box
Answer all questions in this section.
0 1 Figure 1 shows the basic input and output pins for a Johnson decade counter with
decoded outputs.
Figure 1
Figure 2 shows the timing diagram for this counter as a sequence of 11 pulses is
applied to the clock input CK. The counter is triggered by the positive edge of
each pulse.
Figure 2
*02*
IB/M/Jun26/7408/3BE
, 3
Do not write
outside the
0 1 . 1 A square wave of frequency f is applied to CK. box
f
State how the counter can be made to produce pulses of frequency at output Q3.
5
[1 mark]
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun26/7408/3BE
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
PHYSICS
Paper 3
Section B Electronics
Monday 8 June 2026 Morning Time allowed:
Time TBCThe total time for
both sections of this paper is
Materials 2 hours. You are advised to
For this paper you must have:
• a pencil and a ruler spend approximately
• a scientific calculator 50 minutes on this section.
• a Data and Formulae Booklet
• a protractor.
Instructions For Examiner’s Use
• Use black ink or black ball-point pen.
Question Mark
• Fill in the boxes at the top of this page.
• Answer all questions. 1
• You must answer the questions in the spaces provided. Do not write 2
outside the box around each page or on blank pages.
3
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s). 4
• Do all rough work in this book. Cross through any work you do not want 5
to be marked.
TOTAL
• Show all your working.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 35.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
*jun2674083BE01*
IB/M/Jun26/G4007/V11 7408/3BE
, 2
Do not write
outside the
Section B box
Answer all questions in this section.
0 1 Figure 1 shows the basic input and output pins for a Johnson decade counter with
decoded outputs.
Figure 1
Figure 2 shows the timing diagram for this counter as a sequence of 11 pulses is
applied to the clock input CK. The counter is triggered by the positive edge of
each pulse.
Figure 2
*02*
IB/M/Jun26/7408/3BE
, 3
Do not write
outside the
0 1 . 1 A square wave of frequency f is applied to CK. box
f
State how the counter can be made to produce pulses of frequency at output Q3.
5
[1 mark]
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun26/7408/3BE
