The magnetic induction in air at a distance $d$ from an isolated point pole of strength $ m$ unit will be
$\frac{m}{d}$
$\frac{m}{{{d^2}}}$
$md$
$m{d^2}$
A bar magnet of magnetic moment $M$ is placed at right angles to a magnetic induction $B.$ If a force $F$ is experienced by each pole of the magnet, the length of the magnet will be
The diagram shows magnetic field lines. We move from above to below and back.Below shows the graph of variaton of magnetic flux with time. We will measure the flux of
Two short magnets with their axes horizontal and perpendicular to the magnetic meridian are placed with their centres $40\, cm$ east and $ 50\,cm$ west of magnetic needle. If the needle remains undeflected, the ratio of their magnetic moments ${M_1}:{M_2}$ is
Write the Gauss’s law in equation form for electrostatics and magnetism. What is the difference between them ?
Write difference between electrostatic and magnetics :