Michigan Cannabis Risk and Financial Association Practice Test 2026 – The All-in-One Guide to Exam Success!

Ionization smoke detectors rely on a small amount of radioactive material placed between two electrically charged plates to ionize the air and create a steady current. When smoke enters the chamber, the ions are neutralized by the smoke particles, reducing the current and triggering the alarm. This setup is distinct from photoelectric (optical) detectors, which use a light beam and a sensor and do not involve a radioactive source. A dual-sensor unit combines both ionization and photoelectric technologies, while optical typically refers to the light-based method. The description points to ionization because of the radioactive chip between charged plates.