# Question: a non conducting cylinder with an infinite length and radius...

###### Question details

A
non conducting cylinder with an infinite length and radius a=20 cm
has a uniform charge distribution ρ=5e-6 N/M. The inner radius of
the colinde is b=10 cm. Find the electric field at a) r=5 cm b)
r=15 cm c) r=25 cm

The answers are a) 0 b) 23.540 and c) 33900 I need help with
the procedure