Topic: Material Science
Which of the following gives piezo electric effect?
- A. $\mu$metal
- B. PVDF
- C. Saphire
- D. Ferrite
Answer: B. PVDF
Explanation: Polyvinylidene fluoride (PVDF) is a highly non-reactive thermoplastic fluoropolymer that exhibits strong piezoelectricity, often several times greater than that of quartz.