A 1g plastic pellet is accelerated by an electirc field of 1000V/m over a gap of 12 cm.
(i) What is the difference in electric potential over the 12 cm gap?
(ii) What is the kinetic energy of the pellet after it crosses the gap, assuming it starts from rest with the charge of 0.5 mC?
(iii) What is the velocity of the pellet after crossing the gap?