Hysteresis loops for two magnetic materials `A and 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 :

Options

A. A for electromagnets and B for electric generators
B. A for transformers and B for electric generators
C. B for electromagnets and transformers
D. A for electric generators and transformers

Answer

C

Explanation

For electromagnets and transformers , we require the core the can be magnetizes and demagnetized quickly when subjected to alternating current . From the given graphs , graph B is suitable .