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# Which of the following particles will experience maximum magnetic force when projected with the same velocity perpendicular to a constant magnetic field?

$\begin {array} {1 1} (a)\;Electron & \quad (b)\;Proton \\ (c)\;He^+ & \quad (d)\;Li^{++} \end {array}$

The force experienced by a moving charge in a magnetic field is given by
$F = q.V.B$. Since Li has more charge it experiencesmaximum force
Ans : (d)

edited Sep 11, 2014