1. Current flows radially outward (i.e. along the s direction) in a hollow cylindrical conductor with...
to A very long cylindrical shell of inner radius a and outer radius 2a is made of a conducting material of conductivity o= kr, where k is a constant and r is measured perpendicularly from the axis of the shell. A potential difference AV is applied across the inner and outer surfaces of the shell, with the inner surface at the higher potential. (a) What is the resistance dR per unit length of the cylinder, for a thin cylindrical shell...
Problem 2 (15 points): Consider the coaxial arrangement of two very long, thin hollow conductors shown in the figure. Assume that a constant current / flows in one direction on the inner conductor, and a constant current 31 (i.e. three times the current) flows in the opposite direction on the outer conductor. Can one use Ampere's Law to find the magnetic field at any point due to this configuration of currents, or should one use the Biot-Savart Law? Please explain....
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...