Fill in the Blanks Electromagnetic InductionOnline version Electromagnetic Induction by Ayuni Amat 1 A transformer works on the principles of electromagnetic induction . It works using an current . The differences between a direct current and an alternating current are : 1 ) Alternating current from positive to negative continually 2 ) Alternating current has varying A transformer consisted of two coils of wire wrapped around a core . This core is usually made from because it is a or a soft material . A lamp in the secondary coil of a transformer would not lit if there is current in the primary coil because there is no change in or no cutting of , therefore there will be no electromagnetic .
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