All Questions
Tagged with electromagnetism inductance
383
questions
2
votes
3
answers
1k
views
Maximize Magnetic Self-Inductance Through a Wire
You are given a long length W of copper wire. How would you arrange it to obtain the maximum self-inductance? Why?
I am trying to use the equation
$$L=\mu_o n^2 l A$$
I try to solve it using a ...
- 123
5
votes
2
answers
23k
views
Relationship between inductance and number of turns in a coil in loudspeaker
I am in the process of designing a loudspeaker and have a question regarding the number of turns in the multilayered solenoidal coil and the speaker impedance of $8\:\Omega$. I understand that the ...
- 51
3
votes
2
answers
266
views
Drum head coupled with an RLC circuit
I'm thinking about the possibility of an electroacoustic drum that would be tuned with some kind of RLC circuit.
The drum head would have an electromagnet attached to its center, which would be ...
- 133
2
votes
1
answer
1k
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Induction and Halbach array
I have recently studied and tried to understand the concept of the Inductrack, a form of magnetic levitation.
In the following link they present three different ways to construct the track:
http://...
- 27
2
votes
1
answer
604
views
Would a strong diamagnetic material exhibit inductance?
Do metals with the property of strong diamagnetism also exhibit inductance?
Would a fluctuating magnetic field induce a weaker current in a strongly diamagnetic metal as compared against a ...
- 4,723
2
votes
1
answer
408
views
Practical physics: where does this current come from?
It's been a while since school and I don't remember the right laws and formulas. So I come here. :)
I've got a power cord extender running from the wall outlet to my washing machine. It's about 3 or ...
- 3,101
21
votes
4
answers
41k
views
Derivation of self-inductance of a long wire
Currently I am stuck, trying to derive the self-inductance of a long wire. According to literature it should be
$$L=\frac{\mu_r\mu_0l}{8\pi}$$
and in literature its derived by looking at the energy ...
- 1,573
2
votes
1
answer
546
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Are inductance and self-inductance synonyms?
Wikipedia mentions that the word self in the word "self-inductance" is to differentiate it from "mutual inductance". But it does not state whether the two things are the same thing. So do the both ...
- 609