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← ScienceIn a smoke detector using americium-241, which outcome occurs when charged particles reach the detection chamber?
A)Decreased voltage across electrode gap✓
B)Increased ionization chamber current flow
C)Accelerated americium-241 alpha decay
D)Reduced sensitivity to particle detection
💡 Explanation
Alpha particles from americium-241 cause ionization; smoke particles reduce this. This reduction changes the Avalanche effect within the ionization chamber, which measures current flow. Therefore, current decreases rather than increases, because smoke obstructs rather than enhances pathways.
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