Magnetic Properties Of Material - Questions & Answers | Exam2Win

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1. A magnet of mass 0.072 kg has a magnetic moment 6  10-7 Am2. The density of the magnet is 7200 kg/m3. The intensity of magnetization is

A. 6 A/m

B. 60 A/m

C. 0.06 A/m

D. 1 A/m

Explanation:

2. At certain temperature called Curie temperature

A. paramagnetic material becomes ferromagnetic

B. ferromagnetic material becomes paramagnetic

C. diamagnetic material becomes paramagnetic

D. paramagnetic material becomes diamagnetic

Explanation:

3. A magnet of volume 25  10-6 m3 has a magnetic moment of 4  10-4 Am2. The intensity of magnetization of the magnet is

A. 1.6

B. 16

C. 160

D. 1

Explanation:

4. The material which exhibits hysteresis is

A. diamagnetic

B. paramagnetic

C. ferromagnetic

D. ceramic

Explanation:

5. For ferromagnetic substance, the value of µr is

A. less than 1

B. equal to 1

C. greater than 1

D. much greater than 1

Explanation:

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