if we say voltage is work done on a single charge to move it across a circuit, and work is the force applies on a body of a certain mass to move it across a distance, are electric charges in a circuit bodies of mass?
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As a matter of fact all known particles that carry an electric charge have a mass.
This begs the better question, “Why are there no massless charged particles?”
As far as I am aware there is not a solid theoretical reason why massless charged particles couldn’t exist–they just don’t. Also as far as I know, none of our other major theories require a massless charged particles to exist, so there is no reason to expect that they exist.
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