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Which type of material expands and contract in response to an applied electric field?

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in Engineering Chemistry I by (506k points)
Which type of material expands and contract in response to an applied electric field?

(a) Advanced material

(b) Smart material

(c) Biomaterial

(d) Nanomaterial

I had been asked this question in an online interview.

The doubt is from Engineering  Materials topic in portion Materials and their Properties of Engineering Chemistry I

1 Answer

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Right answer is (b) Smart material

The explanation is: Smart materials(Piezoelectric) expand and contract in response to an applied electric field(or voltage).

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