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Electric Field from its Potential of a Half Circle along its Z axis
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[QUOTE="kuruman, post: 6219271, member: 192687"] You can get the electric field on the ##z##-axis from the electric potential ##V(z)##. Note that all elements ##dq## on the ring are at the same distance from the point of interest on the ##z##-axis. Would ##V(z)## be any different if you squeezed all the charge on the ring into a single point charge in the ##xy## plane at distance ##a## from the origin ? [/QUOTE]
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Electric Field from its Potential of a Half Circle along its Z axis
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