(Solved): A uniformly charged hollow tube with radius R = 10 cm and height h = 15 cm has a surface electric ...

A uniformly charged hollow tube with radius R = 10 cm and height h = 15 cm has a surface electric charge density of -7 nC/m². What is the electric potential (in V) at the position P, a distance y = 20 cm away from the top of the tube along the longitudinal axis of the tube? Assume the system is in vacuum. (3 points: Content Area #1)