a material which become polarised when stressed

a material which changes dimension due to applied field

a material that never gets polarised

a material in which magnetising force reduces when current flowing is increased

Mr. Dubey • 100.64K Points
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Q. A piezo electric is

(A) a material which become polarised when stressed
(B) a material which changes dimension due to applied field
(C) a material that never gets polarised
(D) a material in which magnetising force reduces when current flowing is increased

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