Magnetism and Electromagnetism

A. decreases with increasing cross sectional area of material
B. increases with increasing cross-sec-tional area of material
C. does not vary with increasing cross-sectional area of material
D. any of the above

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

A. the dipole moment
B. monopole moment
C. A. and B. both
D. none of the above

A. It assures a position right angle to magnetic field
B. It starts rotating
C. It assures a position which follows a line of magnetic flux
D. None of the above

A. Ferromagnetic
B. Paramagnetic
C. Diamagnetic
D. None of the above

A. a line vertical to the flux lines
B. the mean length of a ring shaped coil
C. a line of magnetic flux in a non-uniform field
D. a line of magnetic flux which does not follow the designed path

A. Silver
B. Copper
C. Silver and copper
D. Iron

A. Ferromagnetic materials
B. Paramagnetic materials
C. Diamagnetic materials
D. Ferrites

A. core length increases i
B. core area increases
C. flux density decreases
D. flux density increases

A. KT3 and 1CT6
B. 1CT3 and 1CT7
C. KT4 and KT8
D. 10″2 and KT5