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A field whose divergence is zero everywhere is described as

  • A.conservative
  • B.solenoidal
  • C.irrotational
  • D.harmonic

Answer: B

Correct answer: solenoidal

A solenoidal field has no sources or sinks, so its flux lines close on themselves and the flux out of any closed surface is zero. The magnetic flux density is the standard example, and it is why magnetic monopoles do not appear in Maxwell’s equations.

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