[Solved] What will be the output behavior of this code snippet on a Raspberry Pi with a buzzer connected to GPIO 18?from gpiozero import TonalBuzzer from time import sleep buzzer = TonalBuzzer(18) buzzer.... | Raspberry Pi

Raspberry Pi - gpiozero Library

What will be the output behavior of this code snippet on a Raspberry Pi with a buzzer connected to GPIO 18?

from gpiozero import TonalBuzzer
from time import sleep
buzzer = TonalBuzzer(18)
buzzer.play(440)
sleep(1)
buzzer.stop()

AThe buzzer plays a random tone for 1 second.

BThe buzzer beeps once immediately and stops.

CThe code raises an error because play() is not a method.

DThe buzzer plays a 440 Hz tone for 1 second, then stops.

Step-by-Step Solution

Solution:

Step 1: Understand TonalBuzzer play() method
The play(frequency) method plays a tone at the given frequency in Hz, here 440 Hz (A note).
Step 2: Analyze code timing
The tone plays for 1 second due to sleep(1), then buzzer.stop() stops the sound.
Final Answer:
The buzzer plays a 440 Hz tone for 1 second, then stops. -> Option D
Quick Check:
play(440) + sleep(1) + stop() = D [OK]

Quick Trick: play(frequency) sounds tone; sleep controls duration [OK]

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What will be the output behavior of this code snippet on a Raspberry Pi with a buzzer connected to GPIO 18?