Question

The material of permanent magnet must possess,

• A. High retentivity , low coerctivity
• B. Low retentivity, hing coercivity
• C. Low retentivity, low coercivity
• D. High retentivity, High coercivity

Answer 1

The correct option is D High retentivity, High coercivity

Material required for making permanent magnets should retain magnetic properties permanently and should not get demagnetized easily.

Hence, in order to make a good permanent magnet, the material should have a high value of retentivity and a high value of coercivity.

Hence, option $\left(D\right)$ is the correct answer.