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Home > Archive > Electrical Engineering > July 2007 > analytical calculation of spheres
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analytical calculation of spheres
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| Hi,
Can someone help me with the the analitical calculation of the
electric
field of an offsetted concentric sphere.
The inner electrode has a radius of 9.5mm and the radius of the outer
electrode is 64mm. The offset of the inner electrode is 44.5 mm from
the centre, so that the distance of the inner electrode towards the
outer electrode is 10mm.
The outer electrode is at ground potential (0 Volt) the inner
electrode
is at 100 kVolt.
Can anyone help me with this problem?
Thanks
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| John Rye 2007-07-18, 9:25 am |
| Hello
In article <1184759680.774752.229270@x35g2000prf.googlegroups.com>,
rzoet <r_zoetmulder@hotmail.com> wrote:
> Hi,
> Can someone help me with the the analitical calculation of the
> electric
> field of an offsetted concentric sphere.
> The inner electrode has a radius of 9.5mm and the radius of the outer
> electrode is 64mm. The offset of the inner electrode is 44.5 mm from
> the centre, so that the distance of the inner electrode towards the
> outer electrode is 10mm.
I think that it is actually 11 mm
> The outer electrode is at ground potential (0 Volt) the inner
> electrode
> is at 100 kVolt.
You do not mention the permittivity of the medium between the spheres.
How is the inner sphere supported ?
How do you get the 100 kV charge onto the inner sphere and measure it ?
John
--
John Rye
Hadleigh IPSWICH England
<http://web.ukonline.co.uk/jrye/index.html>
---< On Line using an Acorn StrongArm RiscPC >---
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| Salmon Egg 2007-07-18, 5:25 pm |
| On 7/18/07 4:54 AM, in article
1184759680.774752.229270@x35g2000prf.googlegroups.com, "rzoet"
<r_zoetmulder@hotmail.com> wrote:
> Hi,
>
> Can someone help me with the the analitical calculation of the
> electric
> field of an offsetted concentric sphere.
> The inner electrode has a radius of 9.5mm and the radius of the outer
> electrode is 64mm. The offset of the inner electrode is 44.5 mm from
> the centre, so that the distance of the inner electrode towards the
> outer electrode is 10mm.
> The outer electrode is at ground potential (0 Volt) the inner
> electrode
> is at 100 kVolt.
>
>
> Can anyone help me with this problem?
>
>
> Thanks
>
This sure sounds like a homework problem to me. It is a little surprising to
see someone, at what appears to be the graduate level, asking for help on
such a problem.
I usually do not succumb to such entreaties. This time, however, I will give
a hint. William R. Smythe.
Bill
-- Fermez le Bush--less than 18 months to go.
| |
| Spurious Response 2007-07-18, 8:25 pm |
| On Wed, 18 Jul 2007 19:19:49 GMT, Salmon Egg <salmonegg@sbcglobal.net>
wrote:
>On 7/18/07 4:54 AM, in article
>1184759680.774752.229270@x35g2000prf.googlegroups.com, "rzoet"
><r_zoetmulder@hotmail.com> wrote:
>
>This sure sounds like a homework problem to me. It is a little surprising to
>see someone, at what appears to be the graduate level, asking for help on
>such a problem.
>
>I usually do not succumb to such entreaties. This time, however, I will give
>a hint. William R. Smythe.
>
>Bill
>-- Fermez le Bush--less than 18 months to go.
>
Whatever happened to "Bushbadee" that always posted here with a
goddamned "B" in front of all his posts?
That guy was annoying, and not all that bright. Tended to toot his own
horn...
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| Salmon Egg 2007-07-19, 3:25 am |
| On 7/18/07 4:17 PM, in article mo7t931trhnad325cv7nobnuau38l9hmoq@4ax.com,
"Spurious Response" <SpuriousResponse@cleansignal.org> wrote:
> Whatever happened to "Bushbadee" that always posted here with a
> goddamned "B" in front of all his posts?
I do not want to know.
-- The PC conservative does not believe in evolution but likes to see
natural selection proceed. The PC liberal believes in evolution but will do
almost anything to prevent natural selection from working.
| |
|
| In article <C2C44F6F.8AB91%salmonegg@sbcglobal.net>,
salmonegg@sbcglobal.net says...
> On 7/18/07 4:17 PM, in article mo7t931trhnad325cv7nobnuau38l9hmoq@4ax.com,
> "Spurious Response" <SpuriousResponse@cleansignal.org> wrote:
>
>
> I do not want to know.
> -- The PC conservative does not believe in evolution but likes to see
^
|
+-- You need a <CR> here if you're intending this as a signature
> natural selection proceed. The PC liberal believes in evolution but will do
> almost anything to prevent natural selection from working.
>
BTW, I like it. ;-)
--
^
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+--- Like this
Keith
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