Is there a higher or lower concentration of charge on the corners of a charged plate?

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Posted on : 17-10-2013 | By : My Study Coach | In : Improve Your Concentration
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Is there a higher or lower concentration of charge on the corners of a charged plate? Why or why not?

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Comments (1)

There is a higher concentration of charge on corners, edges, and sharp points on any conductor.
The reason has to do with the fact that like charges on a surface feel a mutual repulsive force
from all the other surrounding charges on that same surface. Thus, they tend to distribute themselves in a way that balances this repulsive force from all directions. A charge residing near the middle of the charged plate will feel the repulsive force from all directions, but near a corner there is more repulsive force coming from the bulk of the rest of the surface compared to the repulsive forces coming from the area along the corner or edges. The net result is that more charge ends up pushed toward the corners and edges. This is also why, when a surface discharges its built-up charge, it usually starts at a corner or sharp point.

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