Question

S is the surface of a lump of magnetic material.

(a) Lines of B are necessarily continuous across S.

(b) Some lines of B must be discontinuous across S.

(c) Lines of H are necessarily continuous across S.

(d) Lines of H cannot all be continuous across S.

Answer 1

(a), (d)

(a) Lines of B are necessarily continuous across S.

(d) Lines of H cannot all be continuous across S.