Two long thin, parallel conductors carrying equal current in the same direction are fixed parallel to the x-axis one passing through magnetic field due to the two conductors at any point is `B` Which of the following are correct ?(A) B=0 for all points on the x-axis (B) At all points on the y-axis, excluding the origin, B has only a zcomponent. (C) At all points on the z-axis, excluding the origin, B has only an x-component.

Options

A. `B=0`, for all points on the `x-` axis
B. At all points on the `y-` axis, excluding the origin, `B` has only a `z-`component.
C. At all points on the `z-` axis , excluding the origin, `B` has only a `y-` component.
D. `B` cannot have an `x-` component

Answer

A,B,C,D

Explanation

Magnitude of magnetic field on `x-` axis form both the wire are same and opposite direction. So, B on axis is zero.