# Questions tagged [magnetostatics]

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### Why would a ring magnet's flux decrease once distance starts getting small?

I went ahead and use python magpylib to simulate a ring magnet joystick, and then graph flux over distance of the ring magnet. Here's the code: ...
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### What is a magnetization vector, and how can it be computed?

So I know that this is a physics related site, but I'm trying to use a Python library called magpylib to compute magnetic flux at various positions from a joystick ...
29 views

### The amount of current needed to accelerate for specific speed

In the magnetic gun a conducting rod is placed on a two rails connected to a voltage source, so that a current can flow in the rod. Magnetic field $\vec{B}$ is applied perpendicular to the rail-rod ...
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### Magnetic field on an arbitrary point ON a Current Loop

Consider this situation given above. We have an arbitrarily shaped theoretical current loop made up of wire of zero radius in free space. Away from all electromagnetic, gravitational interactions. ...
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### Formula of magnetic flux through a loop as a function of time

I was studying Lenz's law and self inductance when I came across the following question. Take R to be the radius of a circular loop, which has a magnetic field perpendicular to this loop. We let the ...
11 views

### How to prove that magnetic flux density satisfies Ampere's Circuital Law

Here is the expression for Magnetic flux density B which derives from Magnetic vector potential A. I have trouble proving that B in this equation satisfies the differential form of Ampere's Circuital ...
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### Method of images in cylindrical coordinates for a circular ring of current

I am trying to determine if the following problem has an analytical solution using the method of images. The problem is an infinitely long (in $z$) cylinder of a material with permeability $\mu_2$ of ...