Core of an electromagnet should have____________?
Correct answer: C. both of the above
- A. low coercivity
- B. high susceptibility
- C. both of the above
- D. none of the above
Explanation
An electromagnet should magnetize strongly when energized and lose its magnetism readily when the current is removed. High susceptibility provides strong magnetization, while low coercivity permits easy demagnetization, so both properties are required.
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