S is the surface of a lump of magnetic material. (a) Lines of B are necessarily continuous across S.

Monjur Alahi

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.


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Salim Ahmed Kawsar

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(a), (d)

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

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

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