I Just Have One Easy Question - Physical Science, Electromagnetism - 9th grade? - Scroll to the bottom.

Question

kewlgeek555 · Answer

Electromagnets are created by

applying a charge to a magnetic material, wrapped in an insulator, which creates an electromagnetic field around the magnet.

covering a magnet with insulation and applying an alternating electrical current to the magnet.

twisting a ferromagnetic material, wrapping in an insulator, and applying a direct current to the coil.

wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current. 

(I think it's B.  Am I right?)

anonymous · Answer

i think D

kewlgeek555 · Answer

Okay.  Good enough.  I mean.  I really don't know because Michael Faraday, showed that he could induce an electric current in a coiled piece of copper wire if he moved a magnet through the center of the coiled wire.

anonymous · Answer

It is D! :)

kewlgeek555 · Answer

Oh, okay.  It is D.  @sammyjpod and @oksuz_ can I ask another question?