
AQA A-level Physics Electronics lesson on Zener diodes and reference voltages. 17 editable slides, 26-mark worksheet, mark scheme and PDFs.
What’s in the PowerPoint
• A diode recap starter, with answers in the speaker notes
• The Zener characteristic: breakdown voltage and minimum operating current
• A Zener and resistor as a constant voltage source and reference
• Choosing the series resistor and checking power, with worked examples
• An exam-style resistor tolerance check
• A practical: plotting a Zener characteristic
• A common mistakes slide based on AQA examiner reports
• Six check questions with answers, and an exit ticket
• Teacher notes on every slide: spec references, examiner report tips, prior knowledge pages and practical ideas
What’s in the worksheet (26 marks)
• Sketching the characteristic and describing the reference circuit
• Choosing a resistor, with power and tolerance calculations
• Evaluating a resistor choice, in the style of recent AQA papers
• 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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