level 3 gce 9ph003 paper 3 general and practical principles in physics 2022
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Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel
Level 3 GCE
Time 2 hours 30 minutes
Paper
reference 9PH0/03
Physics
Advanced
PAPER 3: General and Practical Principles in Physics
You must have: Total Marks
Scientific calculator, ruler
Instructions
• Use black ink or ball-point pen.
• Fill in the boxes at the top of this page with your name,
centre number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided
– there may be more space than you need.
Information
• The total mark for this paper is 120.
• – usemarks
The for each question are shown in brackets
this as a guide as to how much time to spend on each question.
• structure
In questions marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points that you make are related or
follow on from each other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end.
• appropriate.
You are advised to show your working in calculations including units where
1 A student set up the apparatus shown. A length of rigid wire was held horizontally by a
clamp in a uniform magnetic field of flux density B.
The circuit connected to the rigid wire is also shown.
clamp
stand
magnets l
A
rigid wire
balance rigid wire
With the switch open, the balance was set to zero. When the switch was closed a current I
in the circuit was recorded by the ammeter and the reading on the balance increased.
(a) The length l of wire in the magnetic field was 15.5 cm. When the current in the
circuit was 4.55 A, the reading on the balance increased by 5.65 g.
Calculate the magnetic flux density B in the region of the rigid wire.
(3)
, (b) The student wrote the following statement
“The balance could read to the nearest 0.01 g, which makes my values for the
magnetic force both accurate and precise.”
Comment on this statement.
(3)
, 2 A student used a Geiger-Müller (GM) tube to determine the activity of a radium source.
Radium emits α, β, and γ radiation.
He positioned the source 20 cm from the GM tube, as shown, and recorded the count for
1 minute. He repeated the measurement and calculated a mean count.
GM tube radium source
The student recorded the following results.
Count 1 Count 2 Mean count
183 178 181
(a) Criticise the student’s method for determining the count at this position.
(3)
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