The figure shows three situations when an electron moves with velocity $\vec v$ travels through a uniform magnetic field $\vec B$. In each case, what is the direction of magnetic force on the electron
$+ve\,\,z-$ axis, $-ve\,\,x-$ axis, $+ve\,\,y-$ axis
$-ve\,\,z-$ axis, $-ve\,\,x-$ axis and zero
$+ve\,\,z-$ axis, $+\,ve\,\,x-$ axis and zero
$-ve\,\,z-$ axis, $+ve\,\,x-$ axis and zero
A metallic block carrying current $I$ is subjected to a uniform magnetic induction $\overrightarrow B $ as shown in the figure. The moving charges experience a force $\overrightarrow F $ given by ........... which results in the lowering of the potential of the face ........ Assume the speed of the carriers to be $v$
An electron moving with a uniform velocity along the positive $x$-direction enters a magnetic field directed along the positive $y$-direction. The force on the electron is directed along
A collimated beam of charged and uncharged particles is directed towards a hole marked $P$ on a screen as shown below. If the electric and magnetic fields as indicated below are turned $ON$
Give features of force on charge particle inside magnetic field.
An electron is moving along positive $x$-axis.Auniform electric field exists towards negative $y$-axis. What should be the direction of magnetic field of suitable magnitude so that net force of electron is zero