A particle with a mass of 2.00x10-16 kg and a charge of 22.0 nC starts from rest, is accelerated by a strong electric field, and is fired from a small source inside a region of uniform constant magnetic field 0.660 T. The velocity of the particle is perpendicular to the field. The circular orbit of the particle encloses a magnetic flux of 15.0 µWb.

(a) Calculate the speed of the particle.
m/s

(b) Calculate the potential difference (ΔV) through which the particle accelerated inside the source.
V