NEW AQA Generators and microphones GCSE Lesson

A fully resourced lesson designed for the new AQA GCSE specification, from an experienced author.
This lesson includes editable and PDF versions of:
• Power point presentation
• Worksheets with full sets of answers
• Technician’s sheet (fully resourced and illustrated)
• A VLE version of the presentation (with the answers removed)
In addition, it includes an optional self-marking Google Classroom Homework for those of you lucky enough to work in a school with Google Classroom set up.
Other lessons in this topic are available, as is the topic as a whole.
The first lesson “Permanent Magnets” is available free of charge so you can try before you buy.

Objectives covered:
Lesson 8: PHYSICS ONLY generators and microphones

• Explain how the generator effect is used in an alternator to generate ac and in a dynamo to generate dc.
• Draw/interpret graphs of potential difference generated in the coil against time.
• Explain how a moving-coil microphone uses the generator effect to convert the pressure variations in sound waves into variations in current in electrical circuits.