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IGCSE Physics Past Papers & Drilling (Paper 3): Refraction, Conduction, Magnetic Fields
TUTORZONE ORIGINAL DRILLING MOCK · CAMBRIDGE IGCSE PHYSICS (0625) PAPER 3
Written to the Cambridge 0625 syllabus: Paper 3 Theory (Core), 80 marks, 1 h 15 min, 50% (short-answer and structured); plus Paper 1 Multiple Choice (Core, 40 marks, 30%). This is a Paper 3 drilling mock: 6 questions for 80 marks with answers and techniques.
What is in IGCSE Physics (0625) Paper 3?
Direct answer: Paper 3 Theory (Core), 80 marks, 1 h 15 min, 50% (short-answer and structured).
Assessment at a glance (2027)
| Component | Content | Weighting | Duration |
|---|---|---|---|
| Paper 3 (Theory, Core) | Short-answer and structured, 80 marks | 50% | 1 h 15 min |
| Paper 1 (Multiple Choice, Core) | 40 four-option items, 40 marks | 30% | 45 min |
IGCSE Physics Paper 3 drilling technique: explanation answers use because-so reasoning; calculations show formula, substitution and units; graph answers name the area or gradient; energy answers give conservation plus losses.
How this paper was built
This is a TutorZone original drilling mock: the questions follow the Cambridge 0625 structure (Paper 3 Core, 80 marks, 50%) and the answers are our own, not Cambridge past papers or marking references.
Every numeric answer was recomputed programmatically.
Pacing
| Section | Marks | Suggested time | What to do first |
|---|---|---|---|
| Paper 3 (Theory, Core) | 50% | about 9 min per question | explanation + calculation + graphs |
| Paper 1 (Multiple Choice, Core) | 30% | about 68 s per question | core content only |
How is distance found from a speed-time graph?
Direct answer: from the area under the graph.
Paper 3: core theory drilling (6 questions, 80 marks)
Explain with because-so; write formulas in three layers.
Question 1 (14 marks)
An object speeds up from 10 to 30 m/s in 4 s. Find the acceleration, and explain how the distance is found from a speed-time graph.
Question 2 (14 marks)
Explain the cause of refraction and the direction of bending when light passes from air into glass.
Question 3 (13 marks)
Explain why conduction is faster in a metal than in wood.
Question 4 (13 marks)
A 6 ohm resistor is connected to a 12 V supply. Find the current and the power.
Question 5 (13 marks)
Describe how to use the right-hand grip rule to find the field around a current-carrying wire.
Question 6 (13 marks)
Explain conservation of energy and why efficiency can never be 100%.
How does light bend entering glass?
Direct answer: it slows down and bends towards the normal (refraction).
Paper 3 answers
Question 1
a = (30 – 10) / 4 = 5 m/s^2 (7); distance = area under the graph (7).
Question 2
Light changes speed in a medium (7); entering glass it slows and bends towards the normal (7).
Question 3
Metals have free electrons that transfer kinetic energy quickly (7); wood relies only on particle vibration and conducts slowly (6).
Question 4
I = V / R = 12 / 6 = 2 A (7); P = V x I = 12 x 2 = 24 W (6).
Question 5
Point the right thumb along the current (7); the curled fingers show the direction of the circular field (6).
Question 6
Energy cannot be created or destroyed, only transferred (7); some is always lost as heat or sound (6).
Which topics does this paper drill?
Direct answer: acceleration and graph areas, refraction, conduction, electrical power, magnetic fields, energy conservation and efficiency.
Where these marks are usually lost
| Mistake | What it looks like | What it costs | Instead |
|---|---|---|---|
| Distance as gradient | Gradient | Area under a speed-time graph | area |
| Refraction direction | Away from normal | Towards the normal in glass | towards normal |
| Efficiency over 100% | Ignore losses | Mention heat or sound losses | 80% |
How to use this paper
First drill: the full 1 h 15 min on all 6 questions with no references.
Mark it: check the explanation logic and calculation layers.
Second drill: redo three to seven days later, aiming to finish inside 1 hour.
What should I do after drilling this paper?
Direct answer: log answers missing formulas or units; redo in three to seven days; and drill Paper 4 (Extended theory).
FAQ
Is this a Cambridge past paper?
No. The questions and answers are TutorZone originals, not Cambridge past papers or marking references.
What is in IGCSE Physics Paper 3?
Theory (Core), 80 marks, 1 h 15 min, 50%, short-answer and structured questions.
How is distance found from a speed-time graph?
From the area under the graph.
Official references
| Resource | What to check |
|---|---|
| Cambridge IGCSE Physics 0625 page | Confirm the paper marks and times |
| https://www.tutorzone.com.hk/en-igcse-physics-0625-paper-2-mock-2027/ | IGCSE Physics Paper 2 drilling mock |
Related: practice area · IGCSE Physics Paper 2 drilling mock
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