A charge $q$ is released in presence of electric $(E)$ and magnetic field $(B)$ then after some time its velocity is $v$ then
$v\, \propto \,E$
$v\, \propto \,\frac{1}{E}$
${v^2}\, \propto \,B$
$v\, \propto \,B^o$
Two toroids $1$ and $2$ have total number of tums $200$ and $100 $ respectively with average radii $40\; \mathrm{cm}$ and $20 \;\mathrm{cm}$ respectively. If they carry same current $i,$ the ratio of the magnetic flelds along the two loops is
$1$ $\mathrm{T}$ $=$ ...... Guass.
Which law is useful to determine relation between current and magnetic fields due to it.
When a proton is released from rest in a room, it starts with an initial acceleration $a_0$ towards west. When it is projected towards north with a speed $v_0$ it moves with an initial acceleration $3a_0$ toward west. The electric and magnetic fields in the room are
The motion of a charged particle can be used to distinguish between a magnetic field and electric field in a certain region by firing the charge