Physics - Magnetism Question with Solution | TestHub

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