[Solved] Given this code snippet:pwm = GPIO.PWM(12, 2000) pwm.start(50) pwm.ChangeFrequency(1000)What is the PWM frequency after execution? | Raspberry Pi

Raspberry Pi - PWM Output

Given this code snippet:

pwm = GPIO.PWM(12, 2000)
pwm.start(50)
pwm.ChangeFrequency(1000)

What is the PWM frequency after execution?

A2000 Hz

B1000 Hz

C50 Hz

DCode will error out

Step-by-Step Solution

Solution:

Step 1: Check RPi.GPIO PWM methods
RPi.GPIO PWM object does not have a ChangeFrequency method.
Step 2: Identify the error
Calling pwm.ChangeFrequency(1000) will raise AttributeError since the method does not exist. Frequency is fixed at creation.
Final Answer:
Code will error out -> Option D
Quick Check:
No ChangeFrequency in RPi.GPIO PWM [OK]

Quick Trick: RPi.GPIO PWM frequency cannot be changed after creation [OK]

Common Mistakes:

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