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Hysteresis loops for two magnetic materials A and B are given below : B H (A) B H (B) These materials are used to make magnets for electric generators, transformer core and electromagnet core. Then it is proper to use

1. A for electric generators and tr
2. A for electromagnets and B for electric generators
3. A for tr
4. B for electromagnets and tr

Correct answer: B for electromagnets and tr

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