Question:
Hysteresis loops for two magnetic materials $\mathrm{A}$ and $\mathrm{B}$ are given below :
These materials are used to make magnets for electric generators, transformer core and electromagnet core. Then it is proper to use
Correct Option: 1
Solution:
For electromagnet and transformers, we require the core that can be magnitised and demagnetised quickly when subjected to alternating current. From the given graphs, graph B is suitable.
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