Theory behind investigating factors affecting inductance

In summary, The conversation discusses an investigation on the factors affecting inductance, including the use of three variables: number of turns on the coil, material of the core, and series/parallel connections. The speaker has done experiments to measure the voltage and current and is seeking help with deriving equations for each variable. They also mention a question about the value of self-induced emf and the use of DC in their equation. They also inquire about the equations for series and parallel inductance and mutual inductance.
  • #1
JohnayG
5
0

Homework Statement



Hello,

I am currently doing an investigation to study the factors affecting inductance. The three variables i am using are the number of turns on the coil, the material of the core of the coil and putting 2 cores in series/parallel to see how this affects the inductance in a d.c circuit.

now i have done experiments for each whereby i measured V across inductor to allow me to work out I and therefore see the affect on L in L= -ε ÷(dI/dt)

i just have a couple of questions though. first of all, am i right in saying that my value for ε (self-induced emf) will the same as the supply voltage?

also, i am requesting some help with my theory work deriving the equation for each variable. i have done the theory for changing number of turns by showing how it affects the magnetic flux produced. but I am having problems with the other 2 variables i.e. changing the core/parallel & series circuits; where/what equation with should i start?

Any help hugely appreciated.
Thanks for your time.
 
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  • #2
You don't say what kind of physics/engineering background you have. Have you seen the equations for series and parallel inductance, including mutual inductance? For iron-cored solenoids?

One immediate question: what is dI/dt in your equation, given that you are using DC?
 

FAQ: Theory behind investigating factors affecting inductance

1. What is inductance and why is it important to investigate its factors?

Inductance is a physical property of an object that determines its ability to create an electromagnetic field. Investigating the factors affecting inductance can help scientists understand how objects interact with magnetic fields and how to control them. This is crucial for developing technologies such as motors and generators.

2. What are the main factors that affect inductance?

The main factors that affect inductance include the number of turns in a coil, the shape and size of the coil, the material the coil is made of, and the presence of other conductive or magnetic materials nearby. Additionally, the strength and frequency of the current passing through the coil can also affect its inductance.

3. How do you measure inductance and its factors?

Inductance can be measured using an instrument called an inductance meter. The factors affecting inductance can be measured by varying each parameter one at a time and observing the change in inductance. For example, the number of turns can be changed and the inductance can be measured to determine its effect.

4. How does inductance affect the performance of electronic devices?

Inductance can affect the performance of electronic devices in several ways. High inductance can cause delays in signal transmission, leading to slower performance. It can also cause interference with other electronic components, resulting in errors or malfunctions. Therefore, understanding and controlling inductance is crucial for designing efficient and reliable electronic devices.

5. Can inductance be manipulated or controlled?

Yes, inductance can be manipulated and controlled by changing the factors that affect it. For example, the inductance of a coil can be increased by increasing the number of turns or using a ferromagnetic core. It can also be decreased by using materials with lower magnetic permeability or by introducing air gaps in the coil. Understanding these factors allows scientists to design and control inductance for specific applications.

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