Calculating Inductance of a Tightly Wound Solenoid

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    Solenoid Wound
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Homework Help Overview

The discussion revolves around calculating the inductance of a tightly wound solenoid, given its length, diameter, wire diameter, change in current, and change in time. Participants explore the necessary parameters and relationships involved in the inductance calculation.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the need for the number of turns (N) in the solenoid and question whether all necessary information is provided to calculate inductance. There are attempts to relate the given parameters to the formulas for inductance.

Discussion Status

Some participants have suggested methods to derive N from the provided dimensions of the solenoid and wire. Others have pointed out potential missing information that could hinder the calculation of inductance, particularly the voltage drop across the inductor.

Contextual Notes

There is a noted uncertainty regarding the completeness of the problem statement, particularly concerning the voltage drop and the number of turns in the solenoid.

karbear
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I can't seem to figure out how to solve this problem. If you are given the solenoid length and diameter. And told it consists of a single layer of tightly wound wire with the diameter of the wire given, the change in current thru the wire given, and the change in time given how would you find the inductance? It seems to me I need N. Can anyone help?
 
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"length" --- "tightly wound" --- "diameter of wire" --- "need N" --- hmmmmmmmmm.
 
I think there is a missing piece of information. You could get the inductance from EL=-L(di/dt), but you don't have the voltage drop across the inductor. Likewise, you could get it from the formula for the inductance of a solenoid, but as you say you don't have "N".

Take a closer look at the problem, and see if you aren't overlooking some given info.
 
Try to find N from the length of solenoid and diameter of wire.
 
Thanks guys..I used the length of solenoid and the diameter of the wire to find N. Don't know why I couldn't seem to think of that myself.
 

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