Calculating EMF in Windings of a Cylinder (60cm x 5cm) for 6mV

[Chemist@]

How many windings you have to reel up on a cylinder (length is 60cm and the diameter is 5cm) so that a E_mf of 6mV gets induced if ΔI/Δt=1A/s?

This is not my homework. I was doing this as a preparation. I know the formula:
ε=-L*ΔI/Δt
L is unknown. How to relate it to the windings, the length and the diameter of the cylinder?

 

[CWatters]

Try..

http://www.daycounter.com/Calculators/Air-Core-Inductor-Calculator.phtml

 

[Chemist@]

Okay, thanks.