Question

If a smart material changes colour due to applied voltage, it is

Answer 1

If a smart material changes colour due to applied voltage, it is electrochromic

Answer 2

Heya!!

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Electrochromic is a smart material that changes due to applied voltage.

This process is defined as a reversible colour change due to applied voltage.

Some examples are : Electrochromic glasses (it layered by many substances).

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Hope it helps u :)