An electron microscope uses electrons that are accelerated tospeeds of 30000m/s.The electrone than sent perpendicularly throughanother electric field produced between two plastec 1.00cm apartwith potential difference of 12,000volts. determine:
i) The strength (electric field intensity of the electric field between the plastes and the magnetic field strenth.
ii) required to keep the electrons moving in a straight linethrough the electric field