Question

What is indicated by crowding of magnetic field lines in a given region ?

Answer 1

A region where there is crowding of much more magnetic field lines is known to be the magnetic pole (i.e. north or south pole).

It generally happens that magnetic poles attract each other i.e. it attracts North Pole and goes to the South Pole.

This is why there are more crowds in the magnetic field.

Answer 2

Hey there,

Magnetic lines are just a hypothetical way of showing where the fields are the strongest. Usually at a point p, the magnetic lines are strongest and they start to to curve away as the force starts to weaken.  

But if the lines are forming an inward circle. it mean that the magnetic force is getting stronger and the lines curve towards the point instead of away from it.

I hope the answer is helpful.

Thanks for asking.