What note is on the open 2nd (B) string?

The note on the open 2nd string of the guitar is B. This string is universally tuned to B in standard tuning, which is the most common tuning for a six-string guitar.

When a string is played open, it means that it is not pressed down on any fret, allowing the sound of the string to resonate freely. In standard tuning, the strings are tuned to the following notes from lowest to highest: E (6th string), A (5th string), D (4th string), G (3rd string), B (2nd string), and E (1st string).

Thus, the 2nd string, being tuned to B, will produce the note B when plucked without any fingers pressing down on the frets. This fundamental knowledge of string tuning is essential for guitarists, as it provides the basis for playing chords and melodies accurately across the fretboard.