Piezoelectric crystals produce an emf
A. when external mechanical force is applied to it.
B. when external magnetic field is applied.
C. when radiant energy stimulates the crystal.
D. when the junction of two such crystals is heated.
Answer:A
Piezoelectric crystals produce an emf
A. when external mechanical force is applied to it. B. when external magnetic field is applied. C. when radiant energy stimulates the crystal. D. when the junction of two such crystals is heated.