1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Simple Self-Inductance Problem

  1. Mar 30, 2008 #1
    [SOLVED] Simple Self-Inductance Problem

    1. The problem statement, all variables and given/known data

    Find the inductance L of a long solenoid of length 39.0 cm, and radius 2.30 cm, which has 3.10E2 turns. (Express you answer in units of H for henrys).

    2. Relevant equations


    3. The attempt at a solution

    Okay, so the way I am thinking to solve this problem is to first get the magnetic flux. But I have no idea how to find the current [tex]i[/tex] for a solenoid. Since I don't know how to find [tex]i[/tex], I simply plugged in the formula for flux into the formula for inductance to get:


    That's where I get stuck. *If* I am in fact going about this the right way, do I just find area by using pi*r^2?
  2. jcsd
  3. Mar 31, 2008 #2


    Where A is cross sectional area and l is the length of the solenoid.

    I think...
  4. Mar 31, 2008 #3
    Thanks for the quick response. I got it.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Simple Self-Inductance Problem