# Topic Questions: • suggest realistic modifications to reduce errors — WPH16 Analysis > 10 WPH16 Analysis topic questions (21 marks) on suggest realistic modifications to reduce errors — 9 papers, 2020–2026. Open the exact question in the… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/suggest-realistic-modifications-to-reduce-errors/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/suggest-realistic-modifications-to-reduce-errors/index.md --- Edexcel IAL · Physics · WPH16 · Analysis 10 WPH16 Analysis topic questions are tagged to this syllabus point across 9 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. - 10 topic questions - 9 papers - 21 tagged marks - 3.9% of topic questions - 2.7% of topic marks - 2020–2026 - Syllabus 2018–current - [All WPH16 Analysis topic questions](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/) - [All paper codes](https://www.examsci.com/topics/) Core finding **This Analysis syllabus point appears in 9 WPH16 papers across 2020–2026, contributing 10 topic questions and 21 marks.** The most recent appearance is WPH16/02 January 2026. That equals 3.9% of the 256 topic questions and 2.7% of the 768 marks tagged to Analysis. 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 | | --- | --- | --- | --- | --- | --- | --- | | [**WPH16/02** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2026-january-wph16-02/#q-1) | **Q1** Electrical Resonance - Edexcel IAL Physics Jan 2026 Q1 | FRQ | 1 of 4 parts ((b)) | 1 of 5 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=114c84fd-3781-4813-97ed-ac80839b4d94&question_id=c6f50732-495b-4ef4-853b-032849645c5d&source_detail=WPH16%2F02+January+2026) | | [**WPH16/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2025-october-wph16-02/#q-4) | **Q4** Metal Wire Vibration - Edexcel IAL Physics Oct 2025 Q4 | FRQ | 1 of 5 parts ((b)) | 2 of 14 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fbd8089b-e6b8-4998-a27c-dfc781df83f9&question_id=7ff4f453-c28d-49ad-9bcc-025873fe9bf1&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 ((b)) | 3 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 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 ((b)) | 2 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-4) | **Q4** Rolling Cylinder down a Ramp | FRQ | 1 of 8 parts ((b)(ii)) | 2 of 18 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ba54522a-15a7-44b3-bc8a-fcc2dbc25cd2&question_id=b9057358-f6ec-4e88-9ba3-bc1477d7022f&source_detail=WPH16%2F01+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 ((b)) | 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-4) | **Q4** Shear Modulus of Steel Rod - Edexcel IAL Physics Oct 2021 Q4 | FRQ | 1 of 7 parts ((b)(ii)) | 2 of 16 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=156c424c-fce8-42cf-844c-78581f16cec1&question_id=b5c30f13-36ce-4a6e-84c4-00047d30d9ca&source_detail=WPH16%2F01+October+2021) | | [**WPH16/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-june-wph16-01/#q-3) | **Q3** Horizontal Oscillations of a Trolley - Edexcel IAL Physics Unit 6 June 2021 Q3 | FRQ | 1 of 5 parts ((a)(ii)) | 2 of 18 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=41bf71ba-c485-4200-8564-e6902ece9c3e&question_id=c7340276-5fe2-46fb-a20b-619b8c4c6e65&source_detail=WPH16%2F01+June+2021) | | [**WPH16/01** January 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-6-wph16/2021-january-wph16-01/#q-2) | **Q2** Capacitor Discharge Investigation - January 2021 Q2 | FRQ | 1 of 4 parts ((d)) | 2 of 12 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f2fffd63-93e1-4e9c-8323-1fe7014b5f18&question_id=b89fa3ae-bd3e-4d70-954c-124be666f1d8&source_detail=WPH16%2F01+January+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 ((c)) | 3 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) | ## Related topic questions in Analysis - [• comment on the trend/pattern obtained](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/comment-on-the-trend-pattern-obtained/) — 15 question items · 11 papers — 42 marks · 2020–2026 - [• compound percentage uncertainties correctly](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/compound-percentage-uncertainties-correctly/) — 33 question items · 20 papers — 105 marks · 2020–2026 - [• determine the percentage uncertainty in measurements for a single reading using half the resolution of the instrument and from multiple readings using the half range.](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/determine-the-percentage-uncertainty-in-measurements-for-a-single-reading-using-half/) — 41 question items · 20 papers — 105 marks · 2020–2026 - [• determine the relationship between two variables or determine a constant with the aid of the graph, e.g. by determining the gradient using a large triangle](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/determine-the-relationship-between-two-variables-or-determine-a-constant-with-the-aid/) — 74 question items · 20 papers — 247 marks · 2020–2026 - [• discuss uncertainties qualitatively and quantitatively](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/discuss-uncertainties-qualitatively-and-quantitatively/) — 60 question items · 20 papers — 152 marks · 2020–2026 - [• perform calculations, using the correct number of significant figures](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-6-wph16/analysis/perform-calculations-using-the-correct-number-of-significant-figures/) — 128 question items · 20 papers — 411 marks · 2020–2026 ## Topic question rules and edge cases **How many topic questions cover this syllabus point?** 10 question stems cover this subtopic across 9 papers, but only 10 tagged parts and 21 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/analysis/suggest-realistic-modifications-to-reduce-errors/