alleryAll known magnetic fields are due to moving charges and to intrinsic:
AMagnetic moments
BElectric charges
CThermal motions
DSound vibrations
Answer & Solution
Correct answer: A. Magnetic moments
1. Currents are one source of every magnetic field.
2. Particles also carry a magnetism of their own.
3. That is their intrinsic magnetic moment.
_Source: syllabus Physics Part I, Chapter 4, Moving Charges and Magnetism._
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