A thin cylindrical shell of radius R1=5.8cm is surrounded by a second cylindrical shell of radius R2=9.4cm, as in the figure. Both cylinders are 15m long and the inner one carries a total charge Q1=-0.79 μC and the outer one Q2=+1.49 μC.
![2324_A thin cylindrical shell.png](https://secure.tutorsglobe.com/CMSImages/2324_A%20thin%20cylindrical%20shell.png)
a) For points far from the ends of the cylinders, determine the electric field at a radial distance r from the central axis of 1.8cm?
b) For points far from the ends of the cylinders, determine the magnitude of the electric field at a radial distance r from the central axis of 6.8cm?
c) For points far from the ends of the cylinders, determine the magnitude of the electric field at a radial distance r from the central axis of 12.6cm?