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8) In free space, given a circular ring of radius a [m] with a uniform line charge distribution p [C/m]. The electric potential [V] in the center of the ring is given as (assuming V (co) = 0): A) V (0)=0 B) V (0) - 2me a C) (0)=; 2.76 a a D) V (0) = 260 PL. Pi E) V(0)-- me a