[Solved] What is wrong with this code snippet?import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setup(10, GPIO.OUT) GPIO.output(10, GPIO.HIGH)Assuming the LED is wired to physical pin 10 on the header. | Raspberry Pi

Raspberry Pi - GPIO Basics with Python

What is wrong with this code snippet?

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(10, GPIO.OUT)
GPIO.output(10, GPIO.HIGH)

Assuming the LED is wired to physical pin 10 on the header.

APin 10 in BCM does not match physical pin 10 wiring

BGPIO.setmode(GPIO.BOARD) should be used instead

CGPIO.output() requires pin number as string

DGPIO.setup() cannot use BCM numbering

Step-by-Step Solution

Solution:

Step 1: Understand numbering mismatch
GPIO.setmode(GPIO.BCM) means pin numbers refer to Broadcom chip pins, not physical pins.
Step 2: Check wiring vs numbering
Physical pin 10 corresponds to BCM GPIO 15. The code uses BCM pin 10 (physical pin 19), so it does not control the wired physical pin 10.
Final Answer:
Pin 10 in BCM does not match physical pin 10 wiring -> Option A
Quick Check:
BCM 10 controls physical 19 ≠ pin 10 [OK]

Quick Trick: Match numbering mode to wiring to avoid pin mismatch [OK]

Common Mistakes:

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What is wrong with this code snippet?