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how to simulate electrostatics in AC/DC module ?

Posted 26 mag 2011, 12:49 GMT-4 Low-Frequency Electromagnetics 2 Replies

Rajesh kapuganti
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fundamental equation of electrostatics is Coulomb's law, which describes the force between two point charges.

The magnitude of the electrostatic force between two point electric charges Q1 and Q2 is directly proportional to the product of the magnitudes of each charge and inversely proportional to the surface area of a sphere whose radius is equal to the distance between the charges:

F= Q1 Q 2 / (4*pi*r^2) ?0

where ?0 is a constant called the permittivity of free space, a defined value:

? in A2s4 kg-1m?3 or C2N?1m?2 or F m?1.

i have created two points charges and specified the magnitudes of Q 1 & Q 2.
and ?0

any help/suggestion would be highly appeciated.

thanks in advance,
Ricky
2 Replies Last Post 23 apr 2013, 18:27 GMT-4
cchriste
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Posted: 1 decade ago 26 mag 2011, 14:00 GMT-4
What exactly are you trying to do? I believe there are examples on the Model Exchange page that deal with things like this: www.comsol.com/community/exchange/74/
What exactly are you trying to do? I believe there are examples on the Model Exchange page that deal with things like this: http://www.comsol.com/community/exchange/74/
Victor Martinez
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Posted: 1 decade ago 23 apr 2013, 18:27 GMT-4
The url is broken, do you know where I can get the example?
The url is broken, do you know where I can get the example?

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