Gauss's Law for MagnetismHardQuestion 20230
Question
Gauss's law for magnetism (∮ B·dA = 0) implies:
- AMagnetic field is always zero at a surface
- BMagnetic monopoles do not existCorrect
- CMagnetic field is conservative
- DMagnetic flux depends on the path
Correct answer
Magnetic monopoles do not exist
Explanation
∮ B·dA = 0 means net magnetic flux through any closed surface is zero — i.e., every field line leaving a volume must re-enter it. This is equivalent to saying isolated magnetic poles (monopoles) don't exist; every N pole is accompanied by a S pole.