It would be the key of G. Tubas are C instruments, like a piano.
The tuba is typically played in the key of C.
A tuba is typically played in the key of B-flat.
A sharp key signature is one that contains sharps.
To find sharp key signatures, look at the last sharp in the key signature and go up one half step. This note is the leading tone and indicates the key of the music.
Tuba transposition involves playing music written in a different key than the one the tuba is tuned to. In different musical contexts, tuba players may need to transpose music to match the key of the ensemble they are playing with. This allows the tuba to play in harmony with other instruments and ensures that the music sounds cohesive and in tune.
Tuba fingerings depend on which key your tuba is built in. This question is not complete therefore it cannot be answered.
The key of G Major has one sharp: F#
G
F# is a sharp key. A key is either sharp, natural, or flat. Never all three or two. Only one.
No CNET in Bb Tuba is in BBb or also known as C
G has only one sharp, which is F-sharp.
To find the key signature of "do" in music, look at the last sharp in the key signature. The note one half step above that sharp is "do."