# Long Cylindrical Solenoid#

A long, cylindrical solenoid with $${{ params.n }}\rm\ turns/cm$$ has a radius of $${{ params.r }}\rm\ cm$$.

## Part 1#

Neglecting end effects, what is the self-inductance per unit length of the solenoid?

Please enter in a numeric value in $$\rm\ H/m$$.

## Part 2#

If the current through the solenoid changes at a rate of $${{ params.dIdt }}\rm\ A/s$$, what is the emf induced per unit length?

Please enter in a numeric value in $$\rm\ V/m$$.

### pl-submission-panel#

$$L/\ell =$$ $$\rm\ H/m$$
$${\boldsymbol \varepsilon}/{\ell} =$$ $$\rm\ V/m$$