Dip
Coulomb's Law
Transient induced magnetism
Flux density
Magnetic flux lines
Variation
Lines of magnetic force from a magnet
A soft iron bar that has been magnetised and its poles are not permanent
Inverse square law to calculate attractive and repulsive forces between magnetic poles
Angle a freely suspended magnet makes with the horizontal
Angle between true north and magnetic meridian at that place
The number of magnetic flux lines per square metre cross-section
