Determine the magnitude and direction of the force on an electron travelling 7.75 x 105 m/s horizontally to the east in a vertically upward magnetic field of strength 0.45 T.
a) 5.6 x 10−14 N, south.
b) 1.2 x 10−13 N, north.
c) 5.6 x 10−14 N, north.
d) 1.2 x 10−13 N, south.
e) 2.7 x 10−13 N, south.