I A long paramagnetic rod with radius 2a carries a magnetization: M = Cộ, where C is a constant.The rod is placed with its axis along the z-direction. Coaxial with the rod, there is a long cylindricalshell with inner radius Za and outer radius 3a. The shell carries a uniformly distributed current 21in the positive z-direction. The magnetic field at a point distance r = 4a from the axis of the rod is:(a) B = ö(b) ((e) = HoC(-@)(d) l = 4 c)a4na(e) None of the listed choices(a)(b)O (c)(d)(e)

I A long paramagnetic rod with radius 2a carries a magnetization: M=cộ, where C is a constant. The rod is placed with its axis along the z-direction. Coaxial with the rod, there is a long cylindrical shell with inner radius 2a and outer radius 3a. The shell carries a uniformly distributed current 21 in the positive z-direction. The magnetic field at a point distance r = ta from the axis of the rod is: (a) i - ö (b) - ( ) (e) - HC(-0) (d) - c) He (e) Nane of the listed choices (a) (b) O (c) O (d) (e)

I A long paramagnetic rod with radius 2a carries a magnetization: M=cộ, where C is a constant. The rod is placed with its axis along the z-direction. Coaxial with the rod, there is a long cylindrical shell with inner radius 2a and outer radius 3a. The shell carries a uniformly distributed current 21 in the positive z-direction. The magnetic field at a point distance r = ta from the axis of the rod is: (a) i - ö (b) - ( ) (e) - HC(-0) (d) - c) He (e) Nane of the listed choices (a) (b) O (c) O (d) (e)