Question

Which observation is reflected by Gauss’s law for magnetism?

Options

• Magnetic field lines begin at a single point.

• Magnetic field lines end at a single point.

• Isolated north poles have been observed in nature.

• Isolated magnetic monopoles have not been observed in nature.

Answer 1

No isolated north pole or isolated south pole has been observed. This physical fact is consistent with zero net magnetic flux through a closed surface.