CAIE A-Level Physics 24.1.2 Piezoelectric Ultrasound Transducers

Practise explaining how alternating potential difference makes a piezoelectric crystal generate ultrasound and how returning ultrasound produces an e.m.f.

Exam points

explain how a piezoelectric transducer generates ultrasound from an alternating p.d.
explain how ultrasound is detected when it changes the shape of a piezoelectric crystal and produces an e.m.f.

[Maximum number: 4]

Explain the principles of the generation of ultrasound waves for use in medical diagnosis.

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24.1.2—Ultrasound waves are generated and detected by a piezoelectric transducer question 1