Take a magnetic needle NS, which can rotate freely about a vertical axis in a horizontal plane. Hold a conducting wire AB over the magnetic needle NS parallel to it. Complete the circuit by closing the key such that current flows from A to B.
It is found that N-pole of the magnetic needle gets deflected the west. If the direction of current in the wire is reversed (i.e. from B to A), the N-pole of magnetic needle gets deflected towards east. Since magnetic needle can be deflected by another magnetic field therefore current in the wire must be producing a magnetic field in the surrounding space.
How useful was this post?
Click on a star to rate it!
Average rating / 5. Vote count:
No votes so far! Be the first to rate this post.
We are sorry that this post was not useful for you!
Let us improve this post!
Thanks for your feedback!