How to Calculate N of a Solenoid: Understanding Turns per Meter

[cloud98]

i'm confused with N , it says that is the number of turns per meter , but is the meter the length of the wire or the coil height ?

 

[drvrm]

i'm confused with N , it says that is the number of turns per meter , but is the meter the length of the wire or the coil height ?

N is the number of turns per meter of the coil length/height

 

[cloud98]

N is the number of turns per meter of the coil length/height

Thanks!