Piezo electric crystal can produce an emf Options: A . &nbspWhen external mechanical force is applied to i B . &nbspWhen radiant energy stimulates the crystal C . &nbspWhen external magnetic field is applied D . &nbspWhen the junction of two such crystals are heated

Piezo electric crystal can produce an emf

Question

Piezo electric crystal can produce an emf

Options:

A . When external mechanical force is applied to i

B . When radiant energy stimulates the crystal

C . When external magnetic field is applied

D . When the junction of two such crystals are heated

Answer: Option A

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