
AQA A-level Physics Turning Points lesson on Millikan’s oil drop and quantised charge. 16 editable slides, 27-mark worksheet, mark scheme and PDFs.
What’s in the PowerPoint
• A forces recap starter, with answers in the speaker notes
• Stokes’ law
• Millikan’s apparatus and the two stages, with force diagrams
• Worked examples finding drop radius and charge
• A rising drop extension and why charge is quantised
• A common mistakes slide
• Six check questions with answers, and an exit ticket
• Teacher notes on every slide: textbook pages, spec references, misconceptions and demo ideas
What’s in the worksheet (27 marks)
• Recall of Stokes’ law and the forces on a drop
• Radius, mass, p.d. and charge calculations
• The rising drop equation
• A 6-mark extended answer on the method
• A full mark scheme with mark points, on separate pages
• PDF copies of the slides, the student worksheet (no answers) and the mark scheme, ready to print
Good for
First teaching, revision, homework, cover lessons or independent study. The PowerPoint and Word files are fully editable, and the PDFs are ready to print or share with students.
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