CAIE A-Level Physics 24.1.1 Piezoelectric Effect
Practise explaining how an applied potential difference deforms a piezoelectric crystal and how changing shape generates an e.m.f.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- explain how an applied p.d. changes the shape of a piezoelectric crystal
- explain how a changing crystal shape generates an e.m.f.
24.1.1—A piezo-electric crystal changes shape when a p.d. is applied across it and question 1
[Maximum number: 1]
Piezo-electric transducers are used for the generation of ultrasonic waves.
State one other use, apart from in ultrasound, of piezo-electric transducers.
e.g. microphone weighing scales/pressure sensor
lighters/spark generation watches/clocks/regulation of time
B1
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