Question

a bar magnet is carefully broken into two equal pieces as shown in the figure given alongside how does the Magnetic Strength of each piece compare with that of the original magnet ......plzz plzz give the right answer if u know ......

Answer 1

A bar a finite length separating the two magnetic poles is known as a bar magnet.

The product of pole strength and the length of dipole is known as magnetic moment of bar magnet.

Magnetic moment= pole strength × length

So , magnetic moment increases with the increase in the length of dipole and it decreases with the decrease in the length of dipole.

When a bar magnet is cut alongside (shown in diagram) then magnetic moment reduced because its pole strength reduced.

Since the new length is half of the old length.

Then the magnetic strength will also be half.

$\underline{\bold{So ,\: the \: new \: magnetic \: is \: half \: of}}$
$\underline{\bold {the \: old \: magnetic \: strength}}$

$\frac{new \: magnetic \: strength}{old \: magnetic \: strength.} = \frac{1}{2}$



⭐Hope it may help you ⭐