Sagot :
Answer:
C. Vibration motor
Explanation:
Vibration motor is a compact size coreless DC motor used to informs the users of receiving the signal by vibrating, no sound. Vibration motors are widely used in a variety of applications including cell phones, handsets, pagers, and so on.
Answer:
A
Explanation:
piezo can be seen in sound production.
piezo is an ideal solution for low-power flex, touch, and vibration sensing.