Magnetic Field And Field Lines

In a uniform magnetic field, the field lines are :

How can we represent uniform magnetic field with field lines?

Three identical bars A, B and C are made of different magnetic materials. When kept in a uniform magnetic field, the field lines around them look as follows: Make the correspondence of these bars with their material being diamagnetic (D), ferromagnetic (F) and paramagnetic (P):

Magnetic field lines

Magnetic field lines

Magnet|Orested Experiment|Magnetic Field|Magnetic Field Lines|Properties

Magnet|Orested Experiment|Magnetic Field|Magnetic Field Lines|Properties

Magnetic field lines are

Statement-1 Helmholtz coil is used to obtain uniform magnetic field Statement-2 Magnetic field lines always form closed loop Statement-3 Magnetic field on the line of a straight current carrying wire is always zero

Statement-1 Helmholtz coil is used to obtain uniform magnetic field Statement-2 Magnetic field lines always form closed loop Statement-3 Magnetic field on the line of a straight current carrying wire is always zero