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GCSE Standard Questions: The Generator

(Electromagnetic Induction)

Q4. The diagram shows a student's design for a simple wind speed gauge.

(a) Explain why the wind causes the a.c. voltmeter to give a reading. The explanation has been started for you.

The wind causes the plastic cups to turn. This causes the spindle and magnet to turn..............

(2 marks)

(b) The gauge is not sensitive enough to measure light winds. Suggest one way that the design can be modified to make the gauge more sensitive.

(1 mark)

(Total 3 marks)