Describe the arrangement of iron filings sprinkled around a straight current-carrying wire.

(N/A) When a straight current-carrying wire is passed through a cardboard and iron filings are sprinkled on it,the filings align themselves in concentric circles around the wire.
This phenomenon occurs because the current flowing through the wire generates a magnetic field in the space surrounding it.
The magnetic field lines are circular in nature,with the wire as the center.
The iron filings act as tiny magnets and experience a torque in the presence of this magnetic field,causing them to align along the field lines,thereby mapping the circular magnetic field pattern.