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1answer
334 views

Induction and Halbach Array

I have recently studied and tried to understand the concept of the Inductrack ( http://en.wikipedia.org/wiki/Inductrack ), a form a magnetic levitation. In the following link they present three ...
1
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1answer
49 views

Current through two inductors after a long time

I'm having trouble with visualizing the following problem, which is asking me for the final, steady current in both inductors $L_{1}$ and $L_{2}$. I was thinking that after a long time, essentially ...
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0answers
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Are there analogs to resistance, inductance, capacitance, and memristance connecting the weak force to electromagnetism?

A question was asked over at EE.SE recently which I tried to answer, but much of my answer was speculative. I'm hoping someone here can help my ignorance. In electronics design, there are four ...
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0answers
33 views

Help with inductance and a moving (rolling) rail problem

I can't even do the first part. I've exhausted just about every direction. I've done plenty of moving rail problems without rolling, but I'm guessing you have to have some relationship between the ...
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0answers
3 views

Inductor's energy

I have some knowledge about LC circuits, like I know Maxwell's equations, the differential equations of circuit oscillator and so on. I am armed with equations to solve physical problems involving ...
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0answers
109 views

Comparing sensitivity of flat spiral coils with regular solenoids

I'm attempting to compare the sensitivity that can be gained by using flat spiral coils against regular solenoid coils. A nice paper here gives reasonably accurate expressions for the inductance of ...
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0answers
36 views

Purcell and Self-Inductance

In the second edition on page 282, I'm not sure what is meant. Purcell argues that finding the self inductance of a wire loop is difficult because of the divergence of the B field at the wire, however ...
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0answers
536 views

Ewings Molecular Theory of Magnetism & Induction Cookers

This question regards Ewings molecular theory of magnetism I.) Ewing's molecular theory of magnetism describes every magnetic substance as being a collection of dipoles that are initially in a state ...