How to find value of inductance in LR series circuit?

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Homework Help Overview

The discussion revolves around determining the inductance value in an LR series circuit based on voltage drop measurements across a resistor at various frequencies. The context involves using a constant voltage source and analyzing the relationship between frequency and inductance.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the need to show work for effective homework help. Questions arise regarding the reactance as a function of frequency and the methods to solve for inductance, including geometry and complex impedance equations.

Discussion Status

Some participants have provided insights into the relationship between reactance and frequency, while others have indicated their preferred approach to solving for inductance. The conversation reflects a mix of exploratory and conceptual clarification without reaching a consensus on a specific method.

Contextual Notes

There is an emphasis on the requirement to demonstrate work for homework assistance, which may influence the types of solutions or methods discussed.

mathman44
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Hi. This is a question from my lab. I have a series of measurements of the voltage drop across a resistor for various frequencies with a constant voltage source in an LR series circuit. From these measurements I am supposed to calculate the value of the inductance "L". How can I do this?
 
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For homework help you have to show some work to get some help.

What is the reactance, XL as a function of frequency?
 
XL = [tex]2*pi*f*L[/tex]
 
OK... are you going to solve for L using geometry or the equations for complex impedence?
 
Geometry. Got it, thanks.
 
Good deal.
 

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