Question

why magnetic field line either converge or diverge in a solinoid​

Answer 1

Magnetic field lines only exist as loops, they cannot diverge from or converge to a point like electric field lines can (see Gauss's law for magnetism). ... However, the volume outside the solenoid is much greater than the volume inside, so the density of magnetic field lines outside is greatly reduced.

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Answer 2

Answer:

An intuitive argument can also be used to show that the flux density outside the solenoid is actually zero. Magnetic field lines only exist as loops, they cannot diverge from or converge to a point like electric field lines

Explanation:

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