north to south
south to north
negative to positive
in both the directions
permeability
induction
residual magnetism
saturation
heated
brought near to one end of a magnet
suspended in north-south direction
treated with some chemical
directly proportional to the distance
inversely proportional to the distance
directly proportional to the square of the distance
inversely proportional to the square of the distance
conductance
resistance
reluctance
none of the above