Question

The direction of the magnetic field due to a straight current-carrying conductor is given by Maxwell's cork-screw rule such that the direction of the rotation of the screw gives the ____________.

• A. Direction ofthe magnetic needle kept near by
• B. Direction of the magnetic field lines
• C. Direction of current in the conductor
• D. Both $\left(1\right)$ and $\left(2\right)$

Answer 1

The correct option is B Direction of the magnetic field lines

The direction of circular magnetic field curves can be given by Maxwell’s right hand grip rule or right hand cork screw rule.

If a right handed cork screw is assumed to be held along the conductor, and the screw is rotated in such that it moves in direction of the current, direction of magnetic field is same as that of the rotation of the screw.