Magnetics

A charge particle of \(2 ~\mu \mathrm{C}\) accelerated by a potential difference of \(100 \mathrm{~V}\) enters a region of uniform magnetic field of magnitude \(4 ~\mathrm{mT}\) at right angle to the direction of field. The charge particle completes semicircle of radius \(3 \mathrm{~cm}\) inside magnetic field. The mass of the charge particle is __________ \(\times 10^{-18} \mathrm{~kg}\)