In Fig. an electron (e) is to be released from rest on the central axis of a uniformly charged disk of radius R. The surface charge density on the disk is `+5.00 mu C//m^(2)`. What is the magnitude of the electron's initial acceleration if it is released at a distance (a) R, (b) R/100, and (c ) R/1000 from the center of the disk ? (d) Why does the acceleration magnitude increase only slightly as the release point is moved closer to the disk ?

Explanation

(a) `1.45 xx 10^(16) m//s^(2)`, (b) `4.93 xx 10^(16) m//s^(2)`, (c ) `4.96 xx 10^(16) m//s^(2)`