What note is on the G (3rd) string 2nd fret?

The note found on the G string at the 2nd fret is A. Understanding the names of the notes on the guitar fretboard involves recognizing the standard tuning of each string and knowing how to navigate between the notes through the frets.

The G string, when played open, is tuned to the note G. The musical alphabet progresses as follows: G, G# (or Ab), A, A# (or Bb), B, C, C# (or Db), D, D# (or Eb), E, F, F# (or Gb), and loops back to G. Each fret on the guitar represents a half step in pitch. Therefore, moving from the open G note at the 0 fret to the 1st fret raises the note to G#, and moving to the 2nd fret raises it again to A.

So, at the 2nd fret of the G string, you are indeed playing the note A. This foundational knowledge is valuable for locating notes across the fretboard and understanding the relationships between them.