Question: (a) Consider a single elementary magnet inside a closed surface. Given that elementary magnets are particles without spatial extent, is the magnetic field line flux

(a) Consider a single elementary magnet inside a closed surface. Given that elementary magnets are particles without spatial extent, is the magnetic field line flux through the closed surface positive, negative, or zero?

(b) Does adding a second elementary magnet inside the closed surface change your answer?

(c) Consider a bar magnet inside a closed surface. Is the magnetic field line flux through the closed surface positive, negative, or zero?

(d) Does your answer change if the closed surface cuts through the magnet?

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