An ion of charge and mass describes a circle of radius in a uniform magnetic field of

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

An ion of charge

2e

and mass

3.3 \times 10^{-26}\,\text{kg}

describes a circle of radius

0.25\,\text{m}

in a uniform magnetic field of

0.90\,\text{T}

. Find the kinetic energy (in

\text{MeV}

) it possesses while moving along this path.