Physics - Magnetism Question with Solution | TestHub

The time period of circular motion of the charged particle is given by $\begin{array}{rl}& \mathrm{T}=\frac{2\pi \mathrm{r}}{\mathrm{v}}=\frac{2\pi }{\mathrm{v}}\times \frac{\mathrm{mv}}{\mathrm{Bq}}\\ & \mathrm{T}=\frac{2\pi \mathrm{m}}{\mathrm{Bq}}\end{array}$ Hence, time period of rotation of the charged particle in uniform magnetic field is independent of both $v$ and $R$.