Answer:
the correct one is 3
Step-by-step explanation:
The magnetic force is described by the expression
F = q v x B
The bold indicate vectors, q is the charge, v the velocity and B the magnetic induction
This expression can be written in scalar form
F = q v B sin θ
where θ is the angle between velocity and induction.
The direction of the force is perpendicular to the vectors.
When revising this expression the force depends on the electric charge, the speed of the particle and the induction of the magnetic field
therefore, checking the possible answers, the correct one is 3