Transformer, Electromagnet, Electromagnetism2 solenoid.Doc athttps://www.slideshare.net/PlazPhysics/transformer-past-year-1This Video included Past Year for Electromagnet.Feb/Mar 2017/42 Extended Q8Electromagnethttps://youtu.be/4hYeMB1Wti8 (Electromagnet 1)https://youtu.be/zTBp3I0yr0A (Explanation 1)