Figure P17.73 shows a cylindrical capacitor; it consists of a solid metal rod of radius r₁ surrounded by a metal cylinder with inner radius r₂ and outer radius r₃. Suppose the capacitor has length L (with L very large). Also suppose a charge +Q is placed on the inner rod and a charge -Q is placed on the outer cylinder. 

(a) Find the electric field inside the rod (i.e., for r < r₁). 

(b) Find the electric field in the space between the rod and the cylinder (r₂ > r > r₁). 

(c) Find the electric field outside the capacitor (r > r₃).

Figure P17.73

 

Transcribed Image Text:

-L-