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In electromagnetism, what is the difference between 'collection of point charges' and 'charge distributions'?

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A "collection of [finite-sized, non-infinitesimal] point charges" is a type of "charge distribution".

A "continuous distribution of charge [generally with varying density]" is a type of "charge distribution" that is not a "collection of [finite-sized, non-infinitesimal] point charges."

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