Question

what is the motion of charged particle in y axis in projectile motion.​

Answer 1

The motion of a charged particle in the electric and magnetic field. In case of motion of a charge in a magnetic field, the magnetic force is perpendicular to the velocity of the particle.The particle, therefore, acquires velocity in y-direction and resulting motion is a helical motion. But since particle is accelerated in y –direction, the linear distance between consecutive circular elements of helix increases. In other words, the resulting motion is a helical motion with increasing pitch.