Tarik winds a small paper tube uniformly with 163 turns of thin wire to form a solenoid. The tube's diameter is 6.13 mm and its length is 2.49 cm . What is the inductance, in microhenrys, of Tarik's solenoid?

The  inductance is

Explanation:

From the question we are told that

    The number of turns is  

    The  diameter is  

    The  length is  

The radius is evaluated as

substituting values

The  inductance of the Tarik's solenoid is mathematically represented as

Here is the permeability of free space with value  

A is the area which is mathematically evaluated as

substituting values

substituting values into formula for L  

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.