Coulomb's Law for Magnetism

On what factor does the pole strength of a magnet depends?

What happens pole strength?

Why unit of pole strength is ampere meter?

What is Coulomb's law in magnetism?

What is unit Pole?

Magnetic poles exist in _____.

How is the speed of light related to the permittivity and permeability of free space?

Which of the following equations correctly represents the relationship between permeability and permittivity of free space?

What is the relation between permeability and permittivity of free space?

Why we get two null points for a bar magnet? Can we get only one null point? How?

It's two magnetic poles of unit pole strength are at $1 \mathrm{m}$ distance in vacuum. The force between them will be-

In figure $\left(\mathrm{a}\right)$ three positively charged particles are fixed on an $\mathrm{x}$-axis. Particles $\mathrm{B}$ and $\mathrm{C}$ are so close to each other that they can be considered to be at the same distance from particle $\mathrm{A}$. The net force on particle $\mathrm{A}$ due to particle $\mathrm{B}$ and $\mathrm{C}$ is $F \mathrm{N}$ in the negative direction of the $\mathrm{x}$-axis. In figure $\left(\mathrm{b}\right)$ particle $\mathrm{B}$ has been moved to the opposite side of $\mathrm{A}$ but is still at the same distance from it. The net force on $\mathrm{A}$ is now $\frac{F}{7}\mathrm{N}$ in the negative direction of $\mathrm{x}$-axis. The ratio of charge of particle $\mathrm{C}$ to that of particle $\mathrm{B}$ is $4$ : $\mathrm{b}$, then value of $\mathrm{b}$ is

The refractive index and permeability of a medium are $1.5$ and $5\times {10}^{-7}\mathrm{ }\mathrm{H}\mathrm{ }{\mathrm{m}}^{-1}$ respectively. The relative permittivity of the medium is nearly

A magnetic intensity of $1500 \mathrm{A} {\mathrm{m}}^{-1}$ produces a flux of $2.4\times {10}^{-5} \mathrm{Wb}$ in a iron bar of cross sectional area $0.5 {\mathrm{cm}}^2$. The permeability of the iron bar is

Assertion: Poles of a magnet can never be separated.

Reason: Since each atom of a magnetic material is a magnet in itself.

The characteristic impedance $\left({\mathrm{Z}}_0\right)$ of free space is

Two disimilar poles of strength $x \mathrm{m} \mathrm{wb}$ and $2 \mathrm{m} \mathrm{wb}$ are separated by a distance $12 \mathrm{cm}$. If the null point is at a distance of $4 \mathrm{cm}$ from $2 \mathrm{m} \mathrm{wb}$, then calculate $x$

Six similar magnetic poles are placed on six corners of a regular haxagon of side $10 \mathrm{cm}$. A south pole of strength $10 \mathrm{A} \mathrm{m}$ is placed at the centre of hexagon. Find the magnetic force on the south pole

Three similar magnetic south poles each of  strength $10 \mathrm{A} \mathrm{m}$ are placed at the corners of an equilateral triangle of side $20 \mathrm{cm}$. Find the magnetic force on one of the pole

Two similar equal poles magnet when separated by a distance of $1 \mathrm{m}$, they repel with a force of ${10}^{-3} \mathrm{N}$. The pole strength is