if a magnet cut into two equal pics along its length then the time period each pic in the same field
Answers
Explanation:
What happens when a bar magnet is cut along its length into two equal halves?
Since most bar magnets are actually made up of billions of very small pieces with their magnetic dipoles aligned in the N-S direction of the magnet, then the result would typically be two smaller and somewhat weaker dipole magnets with the magnetic field running in the same general direction as the original. Of course the final result will also depend on exactly how the smaller magnetic dipoles are aligned in the bar magnet. In many cases the manufacturing processes are not very accurate and you may find some puzzling irregularities.
But here is something you may need to take into account. If the material in the inside of the magnet is a long line of N-S, N-S ……,N-S pieces, there will be a tendency of all the various N-S dipoles to cancel each other INSIDE the magnet, so the net magnetic field will tend to be set by the end points of the magnet. Hence if you cut the magnet along its length, you have reduced the crossectional area and so the magnetic field will be reduced approximately by a factor of two. However if you cut it perpendicular to its N-S direction, then you will still get two separate, shorter magnets, but you may find that in fact you have done very little to weaken the strength of the net dipole on each magnet, and I have actually encountered cases where each half has become slightly stronger!
Answer:
The pole strength of each piece when a bar magnet is cut into two equal halves perpendicular to its length is the same as the pole strength of the original bar magnet. However, the magnetic moment of each piece is half the magneticmoment of the original bar magnet.