Respuesta :
A charge is moving downwards so let say this downwards direction is along -z direction
Also here magnetic field is given towards left so let say left direction is towards -x direction
now we have to find force direction so as we know that force on a moving charge is given by
[tex]F = q(\vec v \times \vec B)[/tex]
so here we have
[tex]F = q(v(-\hat k) \times B(-\hat i))[/tex]
[tex]F = qvB(\hat j)[/tex]
so force is along +Y direction
