An electron q=1.602E-19 leaves the cathode ray tube (CRT) and travels in a uniform electrostatic field toward the anode, which is at a potential Va=500V with respect to the cathode. What is the work W done by the electostatic field involved in moving the electron from the cathode to the anode?
What is the electric field strength |E|=E if the distance between the cathode and the anode is 10cm?