Physics PAG 3.1 determine the resistivity of a metal wire

Описание: In this practical masterclass, Dr David Boyce guides you step-by-step through PAG 3.1: Determination of Resistivity — a core required practical for A Level Physics. This isn’t just a demo: we go deeper, using real data, showing worked calculation examples, and exploring the extension content you need for top-grade exam answers.

✨ What you’ll learn in this video:
• What resistivity is and why it matters in physics and engineering
• How to set up the experiment correctly, including best practice for measuring length, diameter, and resistance
• How to collect clean, reliable data
• How to calculate resistivity using ρ = RA / L
• Example calculations using live data gathered in the lesson
• How to calculate percentage uncertainty in diameter, area, resistance, and final resistivity
• How to quote your final result with an appropriate uncertainty
• Common exam pitfalls — and how to avoid them
• How to write up PAG 3.1 to meet A Level assessment criteria

📚 Extension Content Included:
We take a close look at:
• Propagating uncertainties through the calculation
• Why micrometer and resistance measurements matter more than you think
• How to justify the number of significant figures in your final answer

Whether you’re revising for your exams, writing up the practical, or just want a clearer understanding of resistivity, this video gives you the depth and clarity needed to score highly.

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