Each of the lettered points at the corners of the cube as shown in Fig. 1.60 represents a positive charge q moving with a velocity of magnitude v in the direction indicated. The region in the figure is in a uniform magnetic field `vec B`, parallel to the x-axis and directed toward right. Copy the figure, find the magnitude and direction of the force on each charge and show the force in your diagram.

Answer

[(a) `-qvB hat(k)` ; (b) `+qvB hat(j)` ; (c) Zero ; (d) `(-qvB)/(sqrt(2)) hat(j)` ; (e) `(-(qvB)/(sqrt(2)))(hat(j)+hat(k))`]