Question

5. What is the direction of the magnetic force on the proton, electron or neutron (indicated by p. e or n)? 1-1TM HI 1AN в В vp out of page (3) Va into page (4) (1) (2) B into page х хх х х х х х B out of page out of page Ve N N ххX х х X X X Vp Ve (5) (6) (7) (8) 1147

Answer 1

Fm = qū x B

The direction of the magnetic force can be determined by using the right hand rule (for positive charges) or the left hand rule (for negative charges), so that it turns out to be mutually perpendicular to the velocity and to the magnetic field. When v and B are parallel the magnetic force is zero. Particles with no charge feel no magnetic force either. The magnetic field lines always go from N to S poles.

1) F_m points out of the page

2) F_m points into the page

3) F_m points west

4) F_m= 0

5) F_m points east

6) F_m points north

7) F_m points south

8)F_m = 0