A proton is going to be launched from rest eastward through a 3-kV potential difference to a region of 470-millitesla uniform magnetic field due north. What will happen once the proton arrives at the region with magnetic field? O It will be in circular motion with its path having a radius of 16.84 mm. O It will be in circular motion with its path having a radius of 20.52 mm. O It will be in circular motion with its path having a radius of 24.10 mm. O It will be in circular motion with its path having a radius of 12.54 mm.

A proton is going to be launched from rest eastward through a 3-kV potential difference to a region of 470-millitesla uniform magnetic field due north. What will happen once the proton arrives at the region with magnetic field? O It will be in circular motion with its path having a radius of 16.84 mm. O It will be in circular motion with its path having a radius of 20.52 mm. O It will be in circular motion with its path having a radius of 24.10 mm. O It will be in circular motion with its path having a radius of 12.54 mm.