Embibe Experts Solutions for Chapter: Magnetism, Exercise 1: Exercise 1

A ring of radius $\mathrm{R}$ with charge $\mathrm{q}$ uniformly distributed over it is rotated with angular speed $\mathrm{\omega }$ around its axis. Find magnetic moment of the ring.

A bar magnet of length $3\mathrm{cm}$ has points $A$ and $B$ along its axis at distances of $24\mathrm{cm} \mathrm{and} 48\mathrm{cm}$ on the opposite sides. Ratio of magnetic fields as these points will be:

Magnetic moment of revolving electron of charge $e$ and mass $m$ in terms of angular momentum $L$ of electron is

Two particles, each of mass $m$ and charge $q$ are attached to the two ends of a light rigid rod of length $2R$. The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is

A particle of mass $M$ and charge $q$ is moving in a circle of radius $R$ with speed $v$, where $v\ll$ speed of light. The ratio of the magnetic moment of the particle to its angular momentum is

A charged particle (charge $q$) is moving in a circle of radius $R$ with uniform speed $v$. The associated magnetic moment $\mu$ is given by

A charge $\mathrm{q},$ mass $\mathrm{m}$ is moving in uniform circular motion under action of a magnetic field $\mathrm{B}.$ Find magnetic moment associated with the charge. Radius of circle is$\text{'}\mathrm{R}\text{'}.$

A solenoid has core of a material with relative permeability $501$ and its windings carry a current of $1 \mathrm{A}.$ The number of turns of the solenoid is $500 {\mathrm{m}}^{-1}$. The magnetisation of the material is