Magnetism and Matter

What will happen to magnetising field intensity if intensity of magnetisation increases

• decreases

• increases

• no change

• none of above

Q2 What is unit of H?

• A

• Am

• A/m

• A/m²

Name the property of substance which shows how easily

the substance can be magnetised when placed in the magnetising field

• magnetic permeability

• magnetic susceptibilty

• intensity of magnetisation

• magnetising force

dimensional formula of magnetic permeability

• MLT^-1

• MLTA^-1

• MLT^-2A^-2

• ML^-1TA^-1

If susceptibility is negative, then nature of material is

• paramagnetic

• ferromagnetic

• diamagnetic

• none of above

If relative permeability is 0.1, then nature of material is

• diamagnetic

• paramagnetic

• ferromagnetic

• none of above

If rod temds to move from weaker to stronger field , then nature of material

• diamagnetic

• paramagnetic

• ferromagnetic

• none of above

Substances that retain their ferromagnetic property for long period of time are called

• electromagnet

• permanent magnet

• temporary magnet

• none of above