# Topic Questions: • identify and state how to control all other relevant variables to make it a fair test — WPH16 Planning > 23 WPH16 Planning topic questions (97 marks) on identify and state how to control all other… — 14 papers, 2020–2026. Open the exact question in the original… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/identify-and-state-how-to-control-all-other-relevant-variables-to-make-it-a-fair-test/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/identify-and-state-how-to-control-all-other-relevant-variables-to-make-it-a-fair-test/index.md --- Edexcel IAL · Physics · WPH16 · Planning 23 WPH16 Planning topic questions are tagged to this syllabus point across 14 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. - 23 topic questions - 14 papers - 97 tagged marks - 21.1% of topic questions - 31.2% of topic marks - 2020–2026 - Syllabus 2018–current - [All WPH16 Planning topic questions](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/) - [All paper codes](https://www.examsci.com/topics/) Core finding **This Planning syllabus point appears in 14 WPH16 papers across 2020–2026, contributing 23 topic questions and 97 marks.** The most recent appearance is WPH16/01 January 2026. That equals 21.1% of the 109 topic questions and 31.2% of the 311 marks tagged to Planning. 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 | | --- | --- | --- | --- | --- | --- | --- | | [**WPH16/01** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2026-january-wph16-01/#q-2) | **Q2** Rotational Oscillations of a Suspended Mass - Edexcel IAL Physics Jan 2026 Q2 | FRQ | 1 part | 6 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e389a7ab-6b3b-4871-912a-789e04ed24a2&question_id=42fe661e-6cea-4143-98a9-8b710b56103d&source_detail=WPH16%2F01+January+2026) | | [**WPH16/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-01/#q-2) | **Q2** Current-Carrying Coil Experiment - Edexcel IAL Physics Oct 2025 Q2 | FRQ | 1 of 3 parts ((b)(ii)) | 6 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=60c5df21-6537-4be2-9a42-e63ddd5179e3&question_id=d614f5cb-5c0e-4c78-a35c-f5e10d1ebbfb&source_detail=WPH16%2F01+October+2025) | | [**WPH16/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-02/#q-2) | **Q2** Current-carrying Coil Investigation - Edexcel IAL Physics Oct 2025 Q2 | FRQ | 1 of 3 parts ((b)(ii)) | 6 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fbd8089b-e6b8-4998-a27c-dfc781df83f9&question_id=3e0e559a-f4d4-46aa-be47-0f3097f16ca9&source_detail=WPH16%2F02+October+2025) | | [**WPH16/01** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-june-wph16-01/#q-2) | **Q2** Air Pressure and Temperature Relationship - Edexcel IAL Physics Jun 2025 Q2 | FRQ | 1 of 2 parts ((a)) | 6 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=81287a09-8463-47ae-83e2-02eb0f39243c&question_id=502956fd-c601-4407-b6f4-70d56d7d254b&source_detail=WPH16%2F01+June+2025) | | [**WPH16/01** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-june-wph16-01/#q-3) | **Q3** Light Absorption by Glass - Edexcel IAL Physics Jun 2025 Q3 | FRQ | 1 of 6 parts ((b)) | 2 of 18 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=81287a09-8463-47ae-83e2-02eb0f39243c&question_id=be4a137d-c133-46aa-a31f-dbfeb984c6b5&source_detail=WPH16%2F01+June+2025) | | [**WPH16/01** January 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-january-wph16-01/#q-2) | **Q2** Filament Bulb Power and Brightness - Edexcel IAL Physics Jan 2025 Q2 | FRQ | 1 of 2 parts ((b)) | 6 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=bcfaeca5-738a-4114-87ca-5ead774920d1&question_id=fc83ab21-7728-448a-96b3-6c4001451c17&source_detail=WPH16%2F01+January+2025) | | [**WPH16/01** October 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-october-wph16-01/#q-1) | **Q1** Diode Temperature Investigation - Edexcel IAL Physics Oct 2024 Q1 | FRQ | 1 of 4 parts ((b)) | 2 of 9 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e8adbea5-d2fd-4e9a-8e45-adc5da2c6911&question_id=96d15f72-4ac7-4c71-8a83-1c72ed582696&source_detail=WPH16%2F01+October+2024) | | [**WPH16/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2024-june-wph16-01/#q-2) | **Q2** Water Flow Through Horizontal Pipe - Edexcel IAL Physics June 2024 Q2 | FRQ | 1 of 3 parts ((b)) | 6 of 10 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e77c2c99-1b5c-4ba6-aa70-228bda52f6b6&question_id=fc9a0eb9-5662-4748-aca9-73fde1491b0c&source_detail=WPH16%2F01+June+2024) | | [**WPH16/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-june-wph16-01/#q-1) | **Q1** Water Flow Rate and Frequency - Edexcel IAL Physics June 2023 Q1 | FRQ | 1 of 4 parts ((c)) | 3 of 11 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=87d5df9c-b915-4b4b-abba-82e448cb13a7&question_id=d5723ede-f0de-4291-a454-756d88bb2f2d&source_detail=WPH16%2F01+June+2023) | | [**WPH16/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-june-wph16-01/#q-2) | **Q2** Absorption of Beta Particles - Edexcel IAL Physics June 2023 Q2 | FRQ | 1 of 3 parts ((b)(ii)) | 6 of 10 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=87d5df9c-b915-4b4b-abba-82e448cb13a7&question_id=182b3640-3233-417b-b19f-157593c5a5f4&source_detail=WPH16%2F01+June+2023) | | [**WPH16/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-january-wph16-01/#q-1) | **Q1** Temperature of a Bunsen Burner Flame - Edexcel IAL Physics Jan 2023 Q1 | FRQ | 1 of 4 parts ((b)(ii)) | 1 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=887f9d46-271f-4abb-9d98-52d7af235a71&question_id=d4d2374b-7072-4866-b2ab-ac9ce53c502e&source_detail=WPH16%2F01+January+2023) | | [**WPH16/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2023-january-wph16-01/#q-2) | **Q2** Circular Motion Investigation - Edexcel IAL Physics Jan 2023 Q2 | FRQ | 1 of 3 parts ((a)(ii)) | 6 of 10 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=887f9d46-271f-4abb-9d98-52d7af235a71&question_id=73d43b79-0ab7-4a5d-9f41-46ed212dd4f5&source_detail=WPH16%2F01+January+2023) | | [**WPH16/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-june-wph16-01/#q-1) | **Q1** Heating a Liquid - Edexcel IAL Physics Jun 2022 Q1 | FRQ | 1 of 5 parts ((b)(i)) | 1 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=05e3bec6-50fe-4400-940a-ccf0deea7ce0&question_id=30cb1d3a-e322-4109-8259-6f1faefd49ed&source_detail=WPH16%2F01+June+2022) | | [**WPH16/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-june-wph16-01/#q-2) | **Q2** Linked Pendulums - Edexcel IAL Physics Jun 2022 Q2 | FRQ | 1 of 2 parts ((a)) | 6 of 8 on the paper | Hard | [Go to Practice Hub](https://www.examsci.com/practice?set_id=05e3bec6-50fe-4400-940a-ccf0deea7ce0&question_id=6924d458-4441-4baa-ba93-64f431e12f9d&source_detail=WPH16%2F01+June+2022) | | [**WPH16/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-01/#q-1) | **Q1** Length and Temperature of Trapped Air Column | FRQ | 1 of 4 parts ((a)) | 1 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ba54522a-15a7-44b3-bc8a-fcc2dbc25cd2&question_id=3a00e8e8-33b5-42bb-9e55-17bf9b8da250&source_detail=WPH16%2F01+January+2022) | | [**WPH16/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-01/#q-2) | **Q2** Investigating Lenz's Law with Falling Magnets | FRQ | 1 of 2 parts ((a)) | 6 of 8 on the paper | Hard | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ba54522a-15a7-44b3-bc8a-fcc2dbc25cd2&question_id=5fd52ef9-5e21-4697-95a1-e49c74f0ffb7&source_detail=WPH16%2F01+January+2022) | | [**WPH16/02** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-02/#q-2) | **Q2** Gamma Radiation Inverse Square Law - Edexcel IAL Physics Jan 2022 Q2 | FRQ | 2 parts ((a), (b)) | 10 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a68245f3-b013-497e-85d4-b2834c41a6f6&question_id=e382bf03-91ef-47b6-b176-12547e3d61b6&source_detail=WPH16%2F02+January+2022) | | [**WPH16/02** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2022-january-wph16-02/#q-3) | **Q3** Temperature Dependence of Diode Current - Edexcel IAL Physics Jan 2022 Q3 | FRQ | 1 of 5 parts ((a)(i)) | 2 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a68245f3-b013-497e-85d4-b2834c41a6f6&question_id=64dcc374-ce94-499a-9a2c-dc53e1bb5c11&source_detail=WPH16%2F02+January+2022) | | [**WPH16/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-october-wph16-01/#q-1) | **Q1** Heating Effect of a Wire-wound Resistor - Edexcel IAL Physics Oct 2021 Q1 | FRQ | 1 of 3 parts ((a)(i)) | 2 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=156c424c-fce8-42cf-844c-78581f16cec1&question_id=3575d733-86c4-4bd8-a72d-ad3388c72b89&source_detail=WPH16%2F01+October+2021) | | [**WPH16/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-october-wph16-01/#q-2) | **Q2** Pendulum Motion and Period - Edexcel IAL Physics Oct 2021 Q2 | FRQ | 1 of 3 parts ((b)) | 6 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=156c424c-fce8-42cf-844c-78581f16cec1&question_id=020d44fc-fe62-40cf-b4ff-c9efcd999b59&source_detail=WPH16%2F01+October+2021) | | [**WPH16/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2020-october-wph16-01/#q-1) | **Q1** Conservation of Momentum - Edexcel IAL Physics Oct 2020 Q1 | FRQ | 1 of 3 parts ((a)) | 1 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ec519af9-09f9-4899-90e6-2c1c11d16f59&question_id=a44be4d2-9756-4e11-963a-90f6a0d7f803&source_detail=WPH16%2F01+October+2020) | | [**WPH16/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2020-october-wph16-01/#q-2) | **Q2** Alpha Particle Distance Investigation - Edexcel IAL Physics Oct 2020 Q2 | FRQ | 1 part | 6 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ec519af9-09f9-4899-90e6-2c1c11d16f59&question_id=339bc677-4cb5-4fab-a48e-9a6fbfe1f7a3&source_detail=WPH16%2F01+October+2020) | ## Related topic questions in Planning - [• describe how to measure relevant variables using the most appropriate instrument(s) and techniques](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/describe-how-to-measure-relevant-variables-using-the-most-appropriate-instrument-s/) — 67 question items · 20 papers — 234 marks · 2020–2026 - [• discuss calibration of instruments, e.g. whether a meter reads zero before measurements are made](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/discuss-calibration-of-instruments-e-g-whether-a-meter-reads-zero-before-measurements/) — 11 question items · 11 papers — 30 marks · 2020–2026 - [• discuss how the data collected will be used.](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/discuss-how-the-data-collected-will-be-used/) — 17 question items · 15 papers — 96 marks · 2020–2026 - [• discuss whether repeat readings are appropriate](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/discuss-whether-repeat-readings-are-appropriate/) — 34 question items · 19 papers — 150 marks · 2020–2026 - [• identify health and safety issues and discuss how these may be dealt with](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/identify-health-and-safety-issues-and-discuss-how-these-may-be-dealt-with/) — 16 question items · 15 papers — 34 marks · 2020–2026 - [• identify the most appropriate apparatus, giving details. These may include the range and resolution of instruments and/or relevant dimensions of apparatus (e.g. the length of string used for a pendulum)](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/identify-the-most-appropriate-apparatus-giving-details-these-may-include-the-range/) — 44 question items · 18 papers — 155 marks · 2020–2026 ## Topic question rules and edge cases **How many topic questions cover this syllabus point?** 22 question stems cover this subtopic across 14 papers, but only 23 tagged parts and 97 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. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/planning/identify-and-state-how-to-control-all-other-relevant-variables-to-make-it-a-fair-test/