Coulomb’s law and radial fields: Edexcel International A Level Physics questions
Edexcel International A Level Physics past-paper questions on 4.4.1.2 Coulomb’s law and radial fields, 2019–2025, with mark schemes and examiner’s reports where available.
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Calculations
- Your answer
Q12(b)
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Q12(b)
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Q17(b)(ii)
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Q13(a)
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Q13(b)
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Q15(b)
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Q17(c)
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Q12(b)
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- Your answer
Q16(b)(ii)
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Q13(a)(ii)
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Q16(a)
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- Your answer
Q18(a)
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Q18(b)
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Q16(c)
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All 20 questions on Coulomb’s law and radial fields, as a list
- January 2025, Unit 4, Q3 (1 mark): Two identical charged particles were placed in a vacuum 0.020 m apart. The charge on each particle was +8.0 × 10 –6 C. Which of the following gives the magnitud
- January 2025, Unit 4, Q12(b) (2 marks): Neon bulbs light when placed in a region of strong electric field. A neon bulb is moved towards the charged sphere of the Van de Graaff generator. The neon bulb
- October 2024, Unit 4, Q12(b) (3 marks): The positive point charge is placed at P. A negative point charge is placed at Q, as shown below. 12.0 cm P R Q 4.0 cm R is 4.0 cm from P, as shown. Calculate t
- June 2024, Unit 4, Q17(b)(ii) (4 marks): The spacecraft moves to a new position, taking the satellite with it. The distance between the satellite and the spacecraft remains constant, so the electrostat
- January 2024, Unit 4, Q13(a) (2 marks): Calculate the initial force between the helium ion and the proton. (2) Initial force between helium ion and proton =
- January 2024, Unit 4, Q13(b) (2 marks): Calculate the electric field strength due to the helium ion, at the initial position of the proton. (2) Electric field strength due to helium ion =
- October 2023, Unit 4, Q15(b) (2 marks): An alpha particle with a different energy approaches the gold nucleus. The minimum –14 m. distance between this alpha particle and the gold nucleus is 5.68 × 10
- June 2023, Unit 4, Q17(c) (3 marks): A second identical charged sphere is held in a fixed position. The first sphere, attached to the insulating thread, is placed near to the fixed sphere. The sphe
- January 2023, Unit 4, Q12(b) (2 marks): A charge of –4.5 nC is placed 4.0 cm from X. Calculate the magnitude of the force acting on this charge due to the charge at X. charge at X = +7.0 nC (2) Magnit
- June 2022, Unit 4, Q4 (1 mark): Two equally-charged ions exert a force of 4.0 × 10−9 N on each other. The distance between the centres of the ions is 2.4 × 10−10 m. Which of the following is e
- June 2022, Unit 4, Q16(b)(ii) (3 marks): Calculate the strength of the electric field due to the gold nucleus at this distance. (3) Strength of electric field =
- January 2022, Unit 4, Q13(a)(ii) (2 marks): Show that the charge on each balloon is about 2 × 10−7 C. (2)
- October 2021, Unit 4, Q4 (1 mark): Which of the following graphs shows how the electric field strength E varies with distance r from a positive point charge? E E E E 0 0 0 0 r r r r A B C D A B C
- June 2021, Unit 4, Q16(a) (3 marks): Calculate the magnitude of the electric field strength midway between X and Y. charge at X = + 2.5 × 10–7 C charge at Y = – 2.5 × 10–7 C (3) Electric field stre
- January 2021, Unit 4, Q7 (1 mark): Point charges of 2 μC and 3 μC are placed 1.2 m apart as shown. 0.4 m 0.8 m 2 μC X 3 μC What is the electric field strength at the point labelled X? × × − − 2 1
- January 2021, Unit 4, Q18(a) (5 marks): The diagram represents an alpha particle reflected back through 180° as it approached the nucleus of a gold atom. path of alpha particle nucleus of gold atom Ca
- January 2021, Unit 4, Q18(b) (4 marks): The diagram represents the path of an alpha particle with the same initial speed as in (a) that is deflected through a smaller angle. path of alpha particle nuc
- October 2020, Unit 4, Q8 (1 mark): When a point object with charge +Q is placed a distance d away from another point object with charge +2Q the force between them is F. The charges are increased
- January 2020, Unit 4, Q8 (1 mark): Point charges of +q and –q are placed at X and Y respectively. When another charge is placed at Z, the resultant force on the charge at X is zero. Distance XY e
- January 2020, Unit 4, Q16(c) (3 marks): The Earth has an electric field because charge is distributed over its surface. Determine the quantity of charge on 1 m2 of the Earth’s surface which would caus
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