Category: Magnetism and Electromagnetism

A. non-magnetic substances
B. diamagnetic substances
C. ferromagnetic substances
D. none of the above

A. The conductivity of ferrites is better than ferromagnetic materials
B. The conductivity of ferromagnetic materials is better than ferrites
C. The conductivity of ferrites is very high
D. The conductivity of ferrites is same as that of ferromagnetic materials

A. it corrodes easily
B. it has high permeability
C. it has high specific gravity
D. it has low permeability

A. ferromagnetic
B. paramagnetic
C. diamagnetic
D. dielectric

A. attracts some substances and repels others
B. attracts all paramagnetic substances and repels others
C. attracts only ferromagnetic substances
D. attracts ferromagnetic substances and repels all others

A. is constant and has same value in energy part of the magnetic field
B. increases continuously from initial value to final value
C. decreases continuously from initial value to final value
D. first increases and then decreases till it becomes zero