What does piezoelectric material do?

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Prepare for the WJEC Design Technology Exam with detailed flashcards and multiple choice questions, each question comes with hints and explanations. Equip yourself for success!

Multiple Choice

What does piezoelectric material do?

Explanation:
Piezoelectric materials generate an electrical charge when they are deformed by mechanical stress. When you press, bend, or shake them, their crystal structure becomes polarized and a voltage appears, so they can sense or produce electricity. This is why the statement about creating electricity under mechanical stress best fits. The other ideas describe moisture absorption, color change with heat, or light emission, which aren’t properties of piezoelectric materials.

Piezoelectric materials generate an electrical charge when they are deformed by mechanical stress. When you press, bend, or shake them, their crystal structure becomes polarized and a voltage appears, so they can sense or produce electricity. This is why the statement about creating electricity under mechanical stress best fits. The other ideas describe moisture absorption, color change with heat, or light emission, which aren’t properties of piezoelectric materials.

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