Question
Question: Certain crystals produce electric signals on application of pressure. This phenomenon is called....
Certain crystals produce electric signals on application of pressure. This phenomenon is called.
A
Pyroelectricity
B
Ferroelectricity
C
Peizoelectricity
D
Ferrielectricity
Answer
Peizoelectricity
Explanation
Solution
When polar crystal is subjected to a mechanical stress, electricity is produced – a case of piezoelectricity. Reversely, if electric field is applied, mechanical stress is developed. Piezoelectric crystal acts as a mechanical electrical
transductor.