9702 · 24.1
Production and use of ultrasound
Cambridge 9702 Paper 4 — Production and use of ultrasound (24.1). Senpai Corner diagram-backed pilot with premium structure and live visuals.
Need to know
What you need to know
- 24.1 Production and use of ultrasound.
- Piezo-electric effect is the property exhibited by some nonconducting crystals of becoming electrically polarized when mechanically strained and of becoming mechanically strained when an electric field is applied.
- Piezoelectric crystals are materials that produce p.d. when they are deformed.
- When a p.d. is applied to the crystal it deforms and when revered it expands.
- If an AC is applied to the crystal it will vibrate at the same frequency.
- Quartz is the most common form of piezo crystals.
Explanation
Production and use of ultrasound
- 24.1 Production and use of ultrasound.
- Piezo-electric effect is the property exhibited by some nonconducting crystals of becoming electrically polarized when mechanically strained and of becoming mechanically strained when an electric field is applied.
- Piezoelectric crystals are materials that produce p.d. when they are deformed.
- When a p.d. is applied to the crystal it deforms and when revered it expands.