A circular plastic rod of radius R = 2.60 m has a positive charge = Q = 5.00 A c

Question

A circular plastic rod of radius R = 2.60 m has a positive charge = Q = 5.00

A circular plastic rod of radius R = 2.60 m has a positive charge = Q = 5.00 times 10-6 C uniformly distributed along one-quarter of its circumference and a negative charge of -5Q uniformly distributed along the rest of the circumference. What is the electric potential at the center C of the circle? What is the electric potential at point P, which is on the central axis of the circle at a distance z = 1.508 m from the center?

Explanation / Answer

A.)V=KQ/R-5KQ/R=-4KQ/R= -69230.77 V

B.)V=-4KQ/sqrt(R^2+z^2)= - 59886.77 V

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