Question

What is the dimensional formula of pole strength?

Answer 1

Explanation:

we know that magnetic moment is equal to pole strength into distance

formula of pole strength is equal to INA

Answer 2

Answer: $M^{0}L^{1}T^{0}A^{1}$

Explanation:

The pole strength of a magnet indicates the strength or force with which it can attract magnetic materials towards itself or the amount of magnetic flux produced from magnetic poles.

Dimensional formula expression indicates fundamental units raised to powers such that we get one unit of the derived quantity.

$Pole\ strength(m)=Magnetic\ moment(M)/2l\\M=IA\\m=IA/2l$

$The\ unit\ of\ pole\ strength=Ampere\times m^{2}/m=Ampere\times metre$

Therefore the dimensional formula for pole strength will be:

$M^{0}L^{1}T^{0}A^{1}$

The magnetic field of a bar magnet is strongest at the poles, equal at both the north and south pole, and weak in the middle.

Pole strength is a scalar quantity. Here a vector quantity (magnetic moment) is divided by a scalar quantity(Length).