It is given that E = 200 ˆi   N/C
for x > 0 and E = –200 ˆi  N/C for x < 0 A right circular cylinder of
length 20 cm and radius 5 cm has its centre at the origin and its axis
along the x-axis so that one face is at x = +10 cm and the other is at
x = –10 cm (Fig 1 25)