If a charged particle goes unaccelerated in a region containing electric and magnetic fields
$\vec E$ must be parallel to $\vec B$
$\vec v$ must be perpendicular to $\vec E$
$\vec v$ must be perpendicular to $\vec B$
$E$ must be equal to $vB$
The magnetic force acting on charged particle of charge $2\,\mu C$ in magnetic field of $2\, T$ acting in $y-$ direction , when the particle velocity is $\left( {2\hat i + 3\hat j} \right) \times {10^6}\,m{s^{ - 1}}$ is
In case Hall effect for a strip having charge $Q$ and area of cross-section $A$, the Lorentz force is
An $\alpha $ particle and a proton travel with same velocity in a magnetic field perpendicular to the direction of their velocities, find the ratio of the radii of their circular path
What is Lorentz force ? Write an expression for it
A particle having some charge is projected in $x-y$ plane with a speed of $5\ m/s$ in a region having uniform magnetic field along $z-$ axis. Which of the following cannot be the possible value of velocity at any time ?