Question

Meena draws magnetic field lines of the field close to the axis of a current-carrying circular loop. As she moves away from the centre of the circular loop she observes that the lines keep on diverging. How will you explain her observation :

Answer 1

Hint:The magnetic impact on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. In a magnetic field, a moving charge experiences a force that is perpendicular to both its own velocity and the magnetic field. The magnetic field of a permanent magnet attracts or repels other magnets, as well as ferromagnetic elements like iron.


Complete step by step solution:
In a circular loop, electric current generates a magnetic field that is more concentrated in the loop's centre than outside the loop.
Concentric circles develop at the place where the wire passes through the cardboard, with the centre at the point where the wire passes through the cardboard. Near the loop's centre, the lines are virtually straight. The magnetic field at the loop's centre is perpendicular to the loop's plane. The concentric circles become larger as we travel away from the wire because the magnetic field strength weakens as we get further away from the current carrying conductor.
As a result, the magnetic field intensity is inversely proportional to the distance between the current carrying conductor and the magnetic field. That is, the magnetic field weakens as the distance between them grows. As a result, as Meena travels away from the circular loop, the lines continue to diverge.

Note:
In addition, a magnetic field that varies with location will exert a force on a range of non-magnetic materials by affecting the motion of their outer atomic electrons. Magnetic fields surround magnetized materials, and are created by electric currents such as those used in electromagnets, and by electric fields varying in time. Since both strength and direction of a magnetic field may vary with location, they are described as a map assigning a vector to each point of space or, more precisely—because of the way the magnetic field transforms under mirror reflection—as a field of pseudovectors.