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sahilmm15
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"If the sizes of charged bodies are very small as compared to the distances between them, we treat them as point charges". Can you explain me the statement. And what does "sizes of charged bodies" refer here. Thanks
Thanks for the reply. I appreciate it.Ibix said:The electric field of a charged cube, for example, is different from a charged tetrahedron. Very far from the object, though, the differences are negligible, and the difference from the field of a point charge is negligible. So we can just treat it as a point charge and save ourselves from some nasty integrals.
The size of the body, in this context, isn't really precisely defined, since we're talking about an approximation. It's something like the largest distance there is across the object. You need to be much further away than that.
No, point charges are a simplified model used in physics to approximate the behavior of a charged body. They do not accurately represent the distribution of charge or the complex interactions between charges within a body.
Point charges are used to represent the overall charge of a body, with each point charge representing a small portion of the total charge. The forces and interactions between these point charges are then calculated to approximate the behavior of the charged body.
Point charges are limited in their ability to accurately represent the shape, size, and distribution of charge within a body. They also do not account for the effects of external fields or the movement of charges within the body.
No, point charges are most commonly used to approximate simple, symmetrical charged bodies. They are not as accurate for complex or irregularly shaped bodies.
Yes, there are other methods such as finite element analysis or boundary element method that can be used to more accurately approximate charged bodies. These methods take into account the shape, size, and distribution of charge within a body.