A coaxial cable has inner conductor radius a=8.1cm and outer conductor radius b=18.4cm. The medium between the two conductors is free space. The line charge density is pi=7.4nC/m as shown in the figure Static electric energy stored in the insulator region in 1m length along the z- axis is= J Electric energy density at p=17.3cm is= J/m3 Stored energy inside inner conductor in 1m length along the z-axis We= J

A coaxial cable is carrying a uniformly distributed current of 1 A in the inner conductor and -1 A in the outer conductor. The radius of the inner conductor is 6 cm and the radius of the outer conductor is 12 cm. The magnetic field intensity at the circular path of radius 7 cm is: Select one: a. 2.65 A/m O b. 1.76 A/m O c. 1.98 A/m O d. 2.27 A/m e. None of the above