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Voodoo Child
Nivel 3



Joined: 17 Apr 2009
Posts: 22


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PostPosted: Wed Feb 10, 2010 11:14 am  Post subject:  Condiciones de borde Reply with quoteBottom of PageBack to top

Hola, alguien me puede ayudar a demostrar las condiciones de borde en campos electricos?

gracias!


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SaaS
Nivel 7


Age: 35
Joined: 17 Dec 2008
Posts: 310
Location: San Martín
Carrera: Informática
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PostPosted: Wed Feb 10, 2010 11:20 am  Post subject:  (No subject) Reply with quoteBottom of PageBack to top

acá lo tenés en la wiki ...

http://wiki.foros-fiuba.com.ar/materias:62:03:1_al_7

es el ej 3 ...

y acá para campos magnéticos :

http://wiki.foros-fiuba.com.ar/materias:62:03:9_al_15


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Oso
Nivel 9


Age: 38
Joined: 01 Mar 2007
Posts: 2716
Location: San Isidro
Carrera: Industrial
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PostPosted: Wed Feb 10, 2010 11:34 am  Post subject:  (No subject) Reply with quoteBottom of PageBack to top

En la página de Cátedra de Física II tenés algunos apuntes donde lo explican bastante bien.

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[tex]\int Oso + 10\ dt...[/tex]

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Voodoo Child
Nivel 3



Joined: 17 Apr 2009
Posts: 22


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PostPosted: Wed Feb 10, 2010 11:55 am  Post subject:  (No subject) Reply with quoteBottom of PageBack to top

una pregunta mas, el campo electrico en un dipolo, se calcula como la suma del campo debido a las dos cargas puntuales, pero no me sale cuando lo quiero hacer con los versores. Es decir, lo planteo vectorialmente y me queda una suma horrible.

si alguien me da una mano buenisimo!


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cesar87
Nivel 6



Joined: 18 Mar 2007
Posts: 251

Carrera: No especificada
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PostPosted: Wed Feb 10, 2010 1:16 pm  Post subject:  (No subject) Reply with quoteBottom of PageBack to top

perdon voodo, pero no entiendo tu ultima pregunta. podrias mostrar un ejercicio?

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drakoko
Nivel 9


Age: 29
Joined: 19 Jul 2007
Posts: 2528
Location: caballito
Carrera: Mecánica
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PostPosted: Wed Feb 10, 2010 1:40 pm  Post subject:  (No subject) Reply with quoteBottom of PageBack to top

para el dipolo hay una fórmula. fijate que se tomó una vez en un final


aca ta

http://www.foros-fiuba.com.ar/viewtopic.php?t=9678&postdays=0&postorder=asc&highlight=dipolo&start=15

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Johann
Nivel 9


Age: 34
Joined: 04 Apr 2009
Posts: 1098
Location: Nuñez
Carrera: Informática
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PostPosted: Wed Feb 10, 2010 1:44 pm  Post subject:  (No subject) Reply with quoteBottom of PageBack to top

La fórmula para el voltaje de un dipolo puntual es:
V(r)= u.(r-r')/|r-r'|³
siendo u el momento dipolar eléctrico= |q| d(d es el vector posición entre las dos cargas, de negativa a positiva)

El gradiente de eso con un signo menos adelante te da el campo electrico.


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