A) pyroelectricity
B) ferroelectricity
C) piezoelectricity
D) femelectricity
Correct Answer: C
Solution :
Pyroelectricity?Some polar crystals on heating produce small electric current. It is called pyroelectricity. Ferromagnetism?In some piezoelectric, the cyrstals are permanently polarised even in absence of electric field. But when electric field is applied the direction of polarization changes. This phenomenon is called ferromagnetism. Piezoelectricity?Certain crystals produce electrical signals when pressure is applied on them. This phenomenon is called piezoelectricity.
You need to login to perform this action.
You will be redirected in
3 sec
