Figure 4 below shows an infinitely long metallic wire YY’ which is carrying a current . P is a…
Physics20243 marksShort answer
Figure 4 below shows an infinitely long metallic wire YY’ which is carrying a current $I'$. P is a point at a perpendicular distance r from it.
Figure 4
(i)
What is the direction of magnetic flux density B of the magnetic field at the point P?
(ii)
What is the magnitude of magnetic flux density B of the magnetic field at the point P?
(iii)
Another metallic wire MN having length $l$ and carrying a current I is now kept at the point P. If the two wires are in vacuum and parallel to each other, how much force acts on the wire MN due to the current $I'$ flowing in the wire YY'?
