Moving Charges and Magnetism

Question: A proton, a deuteron and an $\alpha - $particle having the same kinetic energy are moving in circular trajectories in a constant magnetic field. If ${r_p},\,{r_d}$ and ${r_\alpha }$ denote respectively the radii of the trajectories of these particles, then

1) ${r_\alpha } = {r_p} < {r_d}$

2) ${r_\alpha } > {r_d} > {r_p}$

3) ${r_\alpha } = {r_d} > {r_p}$

4) ${r_p} = {r_d} = {r_\alpha }$

Solution:

Explanation: No Explanation

Motion of Charged Particle In Magnetic Field

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