Question

What are properties of magnetic field lines of a straight current carrying conductor

Answer 1

The properties are:-
1)The materials used to identify the lines such as iron filling arrange them in concentric circles around the current carrying conductor because of the magnetic lines of force around the conductor which are circular
2)When the direction of current is reversed the direction of magnetic lines of force also gets reversed.
3)The strenght of the magnetic field increases with the increase in strength of the electric current.

Answer 2

The properties are:-

1)The materials used to identify the lines such as iron filling arrange them in concentric circles around the current carrying conductor because of the magnetic lines of force around the conductor which are circular

2)When the direction of current is reversed the direction of magnetic lines of force also gets reversed.

3)The strenght of the magnetic field increases with the increase in strength of the electric current.