# Topic Questions: 98 be able to use $V=\frac{Q}{4\pi\epsilon_{0}r}$ for a radial field — WPH14 Electric and Magnetic Fields

> 20 WPH14 Electric and Magnetic Fields topic questions (55 marks) on 98 be able to use … for a radial field — 18 papers, 2020–2026. Open the exact question…

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Edexcel IAL · Physics · WPH14 · Electric and Magnetic Fields

20 WPH14 Electric and Magnetic Fields topic questions are tagged to this syllabus point across 18 papers (2020–2026). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved.

- 20 topic questions
- 18 papers
- 55 tagged marks
- 6.6% of topic questions
- 7.1% of topic marks
- 2020–2026
- Syllabus 2018–current
- [All WPH14 Electric and Magnetic Fields topic questions](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/)
- [All paper codes](https://www.examsci.com/topics/)

Core finding

**This Electric and Magnetic Fields syllabus point appears in 18 WPH14 papers across 2020–2026, contributing 20 topic questions and 55 marks.** The most recent appearance is WPH14/01 January 2026. That equals 6.6% of the 304 topic questions and 7.1% of the 770 marks tagged to Electric and Magnetic Fields. Only parts tagged to this subtopic are counted, so a four-part question can contribute one item and one part's marks. The table lists every matching question, its tagged parts and marks, with a link back to the paper page. Sessions are newest first, so the statement can be traced back through the full paper history.

## Topic questions by session

Newest sessions first. Parts and marks count only the parts tagged to this subtopic; “x of y parts” shows how much of the question is tagged elsewhere. Select the paper cell to open the matching question on the paper page, or use **Go to Practice Hub** to answer that exact question in the Interactive Practice Hub.

| Paper | Question | Type | Parts | Marks | Difficulty | Practice |
| --- | --- | --- | --- | --- | --- | --- |
| [**WPH14/01** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2026-january-wph14-01/#q-19) | **Q19** Bohr Model of Hydrogen Atom and Circular Acceleration - Edexcel IAL Physics Unit 4 Jan 2026 Q19 | FRQ | 2 of 4 parts ((b)(ii), (c)) | 5 of 15 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=07537f0c-01cf-4760-bd10-3eed77f7d0a6&question_id=2eaaf72c-838f-4625-83b6-91a118b5bca5&source_detail=WPH14%2F01+January+2026) |
| [**WPH14/02** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2026-january-wph14-02/#q-17) | **Q17** Alpha Scattering and Electric Potential - Edexcel IAL Physics Jan 2026 Q17 | FRQ | 1 of 3 parts ((b)(ii)) | 3 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ee1f4910-5f08-42aa-b80e-e6f9fada0b73&question_id=f720a085-6763-427a-ae18-b5f6fef92228&source_detail=WPH14%2F02+January+2026) |
| [**WPH14/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2025-october-wph14-01/#q-19) | **Q19** Alpha Particle Scattering and Nuclear Distance of Closest Approach - Edexcel IAL Physics Oct 2025 Q19 | FRQ | 1 of 3 parts ((b)(i)) | 3 of 11 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=c925843a-0326-4cc4-a60c-ebad9960c7c0&question_id=f46643d8-e734-41f2-808f-158dbc6d63e2&source_detail=WPH14%2F01+October+2025) |
| [**WPH14/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2025-october-wph14-02/#q-13) | **Q13** Linac and Quark Model - Edexcel IAL Physics Oct 2025 Q13 | FRQ | 1 of 11 parts ((c)(ii)) | 2 of 21 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=19a8118b-74b7-4fe4-9125-57c7428661ba&question_id=665d003a-bdc2-4cf8-ab89-158420c77352&source_detail=WPH14%2F02+October+2025) |
| [**WPH14/01** January 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2025-january-wph14-01/#q-12) | **Q12** Van de Graaff Generator - Edexcel IAL Physics Jan 2025 Q12 | FRQ | 1 of 2 parts ((a)) | 2 of 4 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=3fa71427-5fa5-4200-87e4-7de25234272d&question_id=b09daacc-f8a0-43fc-83b6-50c32e888903&source_detail=WPH14%2F01+January+2025) |
| [**WPH14/01** October 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2024-october-wph14-01/#q-16) | **Q16** Linac and Electric Field Model - Edexcel IAL Physics Oct 2024 Q16 | FRQ | 1 of 5 parts ((a)(ii)) | 2 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=b5bd6e3e-5afd-4869-ad78-ba1875109b46&question_id=f6ee4905-7553-44c1-8047-238f565fcf8f&source_detail=WPH14%2F01+October+2024) |
| [**WPH14/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2024-june-wph14-01/#q-17) | **Q17** Electrostatic Removal of Satellites - Edexcel IAL Physics Unit 4 June 2024 Q17 | FRQ | 1 of 5 parts ((b)(i)) | 3 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=cd6c5948-4054-4ae4-8638-e8fde551f1f4&question_id=2fd78e79-4e08-484d-b46b-8a0125924f84&source_detail=WPH14%2F01+June+2024) |
| [**WPH14/01** October 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2023-october-wph14-01/#q-15) | **Q15** Alpha Particle Scattering Calculations - Edexcel IAL Physics Oct 2023 Q15 | FRQ | 1 of 2 parts ((a)) | 4 of 6 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=63cf6d9e-c5b2-42b1-b898-7773fe6081a7&question_id=17e53816-fbbf-4066-9bff-e12bb1ae877f&source_detail=WPH14%2F01+October+2023) |
| [**WPH14/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2023-june-wph14-01/#q-17) | **Q17** Electric Fields and Suspended Sphere - Edexcel IAL Physics June 2023 Q17 | FRQ | 1 of 5 parts ((b)(i)) | 2 of 14 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=2055a28e-816f-4ab5-8253-c37cfd7dd7b9&question_id=ad79e713-2386-48ab-8571-dbb862a97736&source_detail=WPH14%2F01+June+2023) |
| [**WPH14/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2023-january-wph14-01/#q-12) | **Q12** Electric Potential and Equipotentials - Edexcel IAL Physics Jan 2023 Q12 | FRQ | 1 of 3 parts ((c)) | 3 of 7 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=495cc00c-1d7f-4297-981d-c1c626ca134d&question_id=d31102a9-b87c-4e35-bd09-6ff395700dfa&source_detail=WPH14%2F01+January+2023) |
| [**WPH14/01** October 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2022-october-wph14-01/#q-15) | **Q15** Alpha Scattering and Electric Fields - Edexcel IAL Physics Oct 2022 Q15 | FRQ | 1 of 4 parts ((b)(ii)) | 3 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=9be141d5-8b06-4cb6-8fa6-68d1cc9a6174&question_id=9fa2ef98-253d-48bb-86f6-f4743eb3f0e5&source_detail=WPH14%2F01+October+2022) |
| [**WPH14/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2022-june-wph14-01/#q-16) | **Q16** Alpha Particle Scattering and Electric Fields - Edexcel IAL Physics June 2022 Q16 | FRQ | 1 of 3 parts ((b)(i)) | 4 of 13 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=6042feb3-c856-448e-8691-d6933b5190bc&question_id=2313a87c-12c3-481f-a762-3b3b6c17c0d7&source_detail=WPH14%2F01+June+2022) |
| [**WPH14/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2022-january-wph14-01/#q-13) | **Q13** Electrostatic Repulsion of Suspended Balloons - Edexcel IAL Physics Jan 2022 Q13 | FRQ | 1 of 3 parts ((b)) | 2 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=49fe32a1-ed2d-43cb-8e5c-01ad7a065d74&question_id=51528838-5bbb-4c51-8878-fc0338b65177&source_detail=WPH14%2F01+January+2022) |
| [**WPH14/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2021-october-wph14-01/#q-11) | **Q11** Electric Potential of Helium Nucleus - Edexcel IAL Physics Oct 2021 Q11 | FRQ | 2 parts ((a), (b)) | 4 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=8cbfca05-d9d4-4992-a2fe-4a148f95c213&question_id=3c976bfd-f6ed-4509-9ffa-2f022908af91&source_detail=WPH14%2F01+October+2021) |
| [**WPH14/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2021-june-wph14-01/#q-16) | **Q16** Electric Fields and Potentials - June 2021 Q16 | FRQ | 1 of 4 parts ((c)) | 4 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=b192ea77-92eb-44fc-91ce-d3a09157fcbf&question_id=27ea85aa-e9ed-43d1-9575-1417691f7591&source_detail=WPH14%2F01+June+2021) |
| [**WPH14/01** January 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2021-january-wph14-01/#q-18) | **Q18** Alpha Particle Scattering and Acceleration - Edexcel IAL Physics Jan 2021 Q18 | FRQ | 1 of 2 parts ((a)) | 5 of 9 on the paper | Hard | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ad4d3bdd-35e1-4b4e-8408-0afd068c0d8f&question_id=700afec0-07bd-45b8-a7c3-667bfe7a1135&source_detail=WPH14%2F01+January+2021) |
| [**WPH14/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2020-october-wph14-01/#q-14) | **Q14** Alpha Particle Scattering and Charges - Edexcel IAL Physics June 2020 Q14 | FRQ | 1 of 3 parts ((c)) | 3 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fd185779-00c6-4239-82cf-edc1f6fde6bd&question_id=d3c69880-634f-40ab-9847-f4aeaf934f73&source_detail=WPH14%2F01+October+2020) |
| [**WPH14/01** January 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-4-wph14/2020-january-wph14-01/#q-2) | **Q2** Electric Potential of a Point Charge - Edexcel IAL Physics Jan 2020 Q2 | MCQ | MCQ · 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=5ef0bb69-523b-4ef4-b94b-964485f16e14&question_id=a85f1a21-1194-4304-b475-7e8a6492db05&source_detail=WPH14%2F01+January+2020) |

## Related topic questions in Electric and Magnetic Fields

- [92 understand that an electric field (force field) is defined as a region where a charged particle experiences a force](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/92-understand-that-an-electric-field-force-field-is-defined-as-a-region-where-a/) — 11 question items · 6 papers — 27 marks · 2020–2025
- [93 understand that electric field strength is defined as $E=\frac{F}{Q}$ and be able to use this equation](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/93-understand-that-electric-field-strength-is-defined-as-e-frac-f-q-and-be-able-to/) — 30 question items · 17 papers — 93 marks · 2020–2026
- [94 be able to use the equation $F=\frac{Q_{1}Q_{2}}{4\pi\epsilon_{0}r^{2}}$ for the force between two charges](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/94-be-able-to-use-the-equation-f-frac-q-1-q-2-4-pi-epsilon-0-r-2-for-the-force/) — 18 question items · 15 papers — 46 marks · 2020–2026
- [95 be able to use the equation $E=\frac{Q}{4\pi\epsilon_{0}r^{2}}$ for the electric field due to a point charge](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/95-be-able-to-use-the-equation-e-frac-q-4-pi-epsilon-0-r-2-for-the-electric-field-due/) — 12 question items · 11 papers — 23 marks · 2020–2026
- [96 know and understand the relation between electric field and electric potential](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/96-know-and-understand-the-relation-between-electric-field-and-electric-potential/) — 7 question items · 6 papers — 12 marks · 2021–2026
- [97 be able to use the equation $E=\frac{V}{d}$ for an electric field between parallel plates](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/97-be-able-to-use-the-equation-e-frac-v-d-for-an-electric-field-between-parallel/) — 24 question items · 17 papers — 75 marks · 2020–2026

## Topic question rules and edge cases

**How many topic questions cover this syllabus point?**

18 question stems cover this subtopic across 18 papers, but only 20 tagged parts and 55 marks belong to it. Other parts of the same questions are assessed under different statements and are excluded from this page.

**Which papers include this subtopic?**

The table lists every matching session from 2020–2026. Each row links to the question anchor on the paper page, where the full paper context and practice entry point are available.

**Why can one question appear under several subtopics?**

The parts of one question can assess different syllabus statements. Each part is counted under its own subtopics, so the same question stem can appear on several subtopic pages while each page lists only the parts and marks tagged to that statement.

**Can I practise these questions with AI marking?**

Yes. Open a paper from the table and use the Interactive Practice Hub entry point. The page itself is static HTML so search engines and retrieval agents can read the full question list without executing JavaScript.

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Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-4-wph14/electric-and-magnetic-fields/98-be-able-to-use-v-frac-q-4-pi-epsilon-0-r-for-a-radial-field/