A charge ' $\mathrm{q}_{\circ}{ }^{\prime}$ moving with velocity ' $\overrightarrow{\mathrm{v}}$ 'in a…
A charge ' $\mathrm{q}_{\circ}{ }^{\prime}$ moving with velocity ' $\overrightarrow{\mathrm{v}}$ 'in a magnetic field of induction $\overrightarrow{\mathrm{B}}$,
experiences force $\overrightarrow{\mathrm{F}}$ '. The angle between $\overrightarrow{\mathrm{v}}$ and $\overrightarrow{\mathrm{B}}$ is $\theta$.
The speed of ' $\mathrm{q}_{\circ}$ ' after one second will be
$\mathrm{v} / \mathrm{B}$
$\mathrm{v}$
$\mathrm{v} \times \mathrm{B}$
$\mathrm{B} / \mathrm{v}$
Solution
The magnetic force does not change the magnitude of the velocity as it acts right angles to the velocity.