Question

MAGNETIZATION ED 13 I. Magnetic dipoles No magnetic monopoles have thus far been observed, so the most basic source of magnetic fields is a magnetic dipole. A. The current loop shown at right is a simple example of a magnetic dipole. 1. On the diagram, sketch the magnetic field produced by this loop. How does the direction of the field at the center of the loop compare to the direction of the field above and below the loop? To the left or right of the loop? 2. The dipole moment is a vector that describes the magnetic field of a current loop; this vector points in the direction of the magnetic field at the center of the loop. The magnitude of this vector is proportional to the area of the loop and the current in the loop 3. On the diagram, sketch the magnetic moment of the loop. Which end of the dipole moment corresponds to the north pole of the loop? Which corresponds to the south pole? 4.

Answer 1

By using right hand thumb rule we will draw the magnetic field lines of this circular loop. above and below the loop direction of magnetic field will be in upward direction. The direction of magnetic field to the left or right of the loop will be in downward direction because magnetic field lines always make a close loop. \r\n We know that mu Vector = I A Vector Where mu Vector be the magnetic moment vector and A Vector be the area vector of the loop. I be the current in the loop. We can see that mu Vector alpha A Vector that is direction of mu Vector will be same as direction of A Vector Since magnetic field lines always exit from North pole and enter in to South pole so above end will be north pole and lower end will be south pole.