Question

What is the pattern of magnetic field produce in a straight current carrying conductor? How?

Answer 1

A current carrying conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. The nature of the magnetic field lines around a straight current carrying conductor is concentric circles with centre at the axis of the conductor

Answer 2

Magnetic Field Pattern Due to Straight conducting wire is concentric circles.

whose centres lie on the wire. The direction of magnetic field lines can be determined using Right-Hand Thumb Rule.

Right Hand Palm Rule : According to this rule if we open our right hand palm in such a way so that thumb represents the current, 4 fingers represent the magnetic field, then normal to the palm will represents the direction of force.