Question

What is the magnitude of magnetic field at a point X placed at equidistant from two current carrying conductors in same direction? (CBSE2019 SET2).

Answer 1

let me assume that the current is flowing in upward direction as drawn in fig.

Now we know,

i) the current carrying straight conductor forms magnetic field in the form of concentric circles following right hand thumb rule.

The concentric circles of the two wires will overlap at point X. But their direction will be opposite.

so they will cancel out each others effect and the magnitude of the magnetic field at X will be zero Oersted.

Hope this helps mate !!!!