If a magnet of pole strength m is divided int | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The pole strength $m$ of a magnet is directly proportional to its cross-sectional area $A$ (i.e.,$m \propto A$).When the magnet is cut into four p

Vedclass · Accepted Answer

$m/2$

Vedclass · Answer

(B) The pole strength $m$ of a magnet is directly proportional to its cross-sectional area $A$ (i.e.,$m \propto A$).When the magnet is cut into four parts such that the length and width of each part are halved,the cross-sectional area of each part becomes $A' = (width/2) 	imes (thickness/2) = A/4$ if we consider the cross-section as a rectangle. However,the question specifies the width is halved. If the magnet is cut along its length and width,the cross-sectional area $A$ is halved by the cut along the width. Thus,the new pole strength $m'$ is proportional to the new area $A' = A/2$.Therefore,$m' = m/2$.

If a magnet of pole strength $m$ is divided into four parts such that the length and width of each part is half that of the initial one,then the pole strength of each part will be

Similar Questions

What causes the couple acting on the needle of a compass?

If a bar magnet of pole strength $m$ and magnetic moment $M$ is cut equally $5$ times parallel to its axis and again $3$ times perpendicular to its axis,then the pole strength and magnetic moment of each piece are respectively

Magnetic dipole moment is a

The force between two unit pole strengths placed at a distance of $1 \, m$ is:

Two points $A$ and $B$ are situated at a distance $x$ and $2x$ respectively from the nearer pole of a magnet $2 \ cm$ long. The ratio of the magnetic field at $A$ and $B$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module