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Soft iron is used in the cores of transformers.(a) True(b) FalseI had been asked this question in semester exam.Question is from Permanent Magnets and Electromagnets in portion Magnetism and Matter of Physics – Class 12

Answer»

Right choice is (a) True

To explain: Soft IRON has high permeability and low retentivity and is used as an ELECTROMAGNET. The area under the hysteresis loop for soft iron is less. So where the repeated cycles of magnetization occur, there on USING soft iron core, energy losses are less. That is why soft iron is used in cores of transformers, galvanometers, GENERATORS, ETC.



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