1. When smoke enters a smoke alarm, it interrupts a continuous flow of current that is maintained inside the alarm. This current is typically maintained between two electrodes.

2. The smoke alarm contains a small amount of radioactive material, Americium-241, between two electrically charged plates. This radioactive material ionizes the air, causing it to carry a current.

3. When smoke enters the alarm, it absorbs the alpha particles that the Americium-241 is emitting. This reduces the ionization of the air and interrupts the current.

4. The interruption of the current triggers the alarm's circuitry to sound the alarm, alerting the occupants of the building to the presence of smoke.

Question

1. When smoke enters a smoke alarm, it interrupts a continuous flow of current that is maintained inside the alarm. This current is typically maintained between two electrodes.

2. The smoke alarm contains a small amount of radioactive material, Americium-241, between two electrically charged plates. This radioactive material ionizes the air, causing it to carry a current.

3. When smoke enters the alarm, it absorbs the alpha particles that the Americium-241 is emitting. This reduces the ionization of the air and interrupts the current.

4. The interruption of the current triggers the alarm's circuitry to sound the alarm, alerting the occupants of the building to the presence of smoke.

Knowee AI · Accepted Answer

1. When smoke enters a smoke alarm, it interrupts a continuous flow of current that is maintained inside the alarm. This current is typically maintained between two electrodes.

2. The smoke alarm contains a small amount of radioactive material, Americium-241, between two electrically charged plates. This radioactive material ionizes the air, causing it to carry a current.

3. When smoke enters the alarm, it absorbs the alpha particles that the Americium-241 is emitting. This reduces the ionization of the air and interrupts the current.

4. The interruption of the current triggers the alarm's circuitry to sound the alarm, alerting the occupants of the building to the presence of smoke.

State what happens inside a smoke alarm when smoke enters it.

Question

Solution

Similar Questions

Upgrade your grade with Knowee