A 7.12 µc charge is moving at one half the speed of light perpendicular to a magnetic field of 4.02 mT. how large is the force on the charge?
a. 4.29N
b. 32.90 x 10¹ N
c. 4.29 x 10¹² N
d. 1.00 x 10¹⁶ N