Mathematics

Problem

0.10\,\text{m}

long aluminium rod of mass

50\,\text{g}

rests on two smooth rails placed in a uniform magnetic field of

0.80\,\text{T}

. The field is perpendicular to the rod, and a current of

12\,\text{A}

flows through it. Neglecting friction, find the acceleration produced in the rod. a)

0.96\,\text{m s}^{-2}

24\,\text{m s}^{-2}

19.2\,\text{m s}^{-2}

9.6\,\text{m s}^{-2}