Question

difference between uniform non uniform magnetic field mlines

Answer 1

at the uniform magnetic field the magnetic flux lines are parallel and perpendicular to the plane while at non uniform it takes the shape as its type as at short bar-magnet it appears as imaganary half circles coming from the n-pole to s-pole ;note ; the magnetic field due to electric current passing by a circular loop has the two types uniform field and non uniform field

Answer 2

A uniform magnetic field doesn't depend on position, its the same everywhere. A non uniform magnetic field changes from one place to another.

Answer 3

The electric field inside the plates of a large parallel plate capacitor is uniform, the field is the same size and points the same direction everywhere in between the plates. The electric field of a point charge is non-uniform, it points in a different direction everywhere
in space, and gets smaller as you move further away from the charge.