A cylindrical shell of radius 9.9 cm and length 286 cm has its charge density uniformly distributed on its surface. The electric ﬁeld intensity at a point 23 cm radially outward from its axis (measured from the midpoint of the shell ) is 44800 N/C.
Given: ke = 8.99 × 10^9 N · m^2/C^2,
What is the electric ﬁeld at a point 4 cm from
E = (Keq)/r2
The Attempt at a Solution
I kind of don't even know where to start