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8.
A thin circular ring of radius R=10 cm has a uniformly distributed charge of Q=3.4 µC.
a) Determine the electric potential of the ring at point P. [V∞ = 0]
b) What is the ratio of the electric potential of point P to the potential at the center of the ring?
Vp
Vcenter
c) What is the work done by the electric field to carry a single electron from the center of the ring to
point P?
24
Answers: a) 117.7 kV, b) 0.38 and c) -30.1 x10-15 J

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