Fun with FieldsElectricity and Magnetism Level pending
A Proton is accelerated from rest by a potential difference V = 420. The proton then enters a magnetic field as shown in the diagram:
The proton leaves the region from the side BC. Determine the magnitude of the electric field strength that would produce a force on a proton that is equal to the force due to the magnetic field that acts on the proton while the proton is in the region ABCD.