CBSE-XI-Physics

34: Magnetic Field

with Solutions -
Qstn# ii-3 Prvs-QstnNext-Qstn
  • #3
    Which of the following particles will experience maximum magnetic force (magnitude) when projected with the same velocity perpendicular to a magnetic field?
    (a) Electron
    (b) Proton
    (c) He+
    (d) Li++
    digAnsr:   d
    Ans : (d) Li++
    Force on a moving charged particle,
    F = qVBsin`` \theta ``
    ​As velocity V and magnetic field B are constant, and angle between the magnetic field and charged particle is `` 90°``, the only thing on which force F depends is charge q.
    Now, the charge on `` L{i}^{++}`` > charge on electron, proton or `` H{e}^{+}``. So the force is maximum for `` L{i}^{++}``.
    Page No 229: