At temperatures near absolute zero, BcBc approaches 0.142 TT for vanadium, a type-I superconductor. The normal phase of vanadium has a magnetic susceptibility close to zero. Consider a long, thin vanadium cylinder with its axis parallel to an external magnetic field B⃗ 0B→0 in the +x-direction. At points far from the ends of the cylinder, by symmetry, all the magnetic vectors are parallel to the x-axis.
a. What is the direction of the resultant magnetic field B? inside the cylinder for this case?
b. What is the direction of the resultant magnetic field inside the cylinder for this case?