12/01/2020
Exercise: Uniformly-Charged Ring
y
R
(x,0)
x
Total charge Q, uniform charge/unit length , (linear charge density)
radius R
Find: Electric field, E, at any point (x, 0) on the axis of the ring
Physics 1E03 ‐ Lecture 4
1
Exercise: Uniformly-Charged Disk
Study the solution in the text
(Chapter 23)
uniform charge/unit surface  (surface charge density),
radius R
Find: the electric field, E, at point P on the axis of the disk
Physics 1E03 ‐ Lecture 4
2
1