Question

What kind of detector is used in dirty environments, less sensitive than other types, and are areas where smoke is produced?

1) Smoke detector
2) Heat detector
3) Gas detector
4) Motion detector

Answer 1

A smoke detector is used in dirty environments, less sensitive than other types, and areas where smoke is produced. It contains an electric circuit with two metal plates and a small amount of the radioactive element americium. The smoke particles disrupt the flow of ions and trigger an alarm when they enter the smoke detector.

Step-by-step explanation:

The detector used in dirty environments, less sensitive than other types, and areas where smoke is produced is a smoke detector. A typical smoke detector contains an electric circuit with two metal plates and a small amount of the radioactive element americium. The radioactivity of the americium ionizes the air between the plates, causing a constant flow of current. When smoke particles from a fire enter the smoke detector, they disrupt the flow of ions and interrupt the current, triggering an alarm.