Question

Which type of smoke detector is likely affected by air velocity?

Answer 1

Ionization-type smoke detectors, which use americium-241 to create an ionizing current, are likely affected by air velocity as it can disperse smoke and affect the detector's function.

Step-by-step explanation:

The type of smoke detector that is likely affected by air velocity is the ionization-type smoke detector. These detectors contain a small amount of americium-241 which emits alpha particles to ionize the air, creating a current between two metal plates. When smoke enters the chamber, it disrupts this current of ions, leading to a reduction in conductivity and triggering the alarm. High air velocity could potentially disperse the smoke, thereby affecting the performance of the detector.