A. Electromagnetic fields are invisible electric and magnetic fields created as a by-product wherever electricity (AC and DC) is utilized.
(A. Electromagnetic fields; are; invisible electric and magnetic fields created as a by-product) (invisible electric and magnetic fields; created; as a by-product) (electricity; is utilized; )
A. Electromagnetic fields invisible electric and magnetic fields electricity
are created is utilized
invisible electric and magnetic fields created as a by-product
as a by-product