Cathode Ray Tube

A cathode ray tube (CRT) is a device that produces a focused beam of electrons in a vacuum. The electrons strike a phosphor-coated glass screen at the end of the tube, which produces a bright spot of light. The position of the bright spot on the screen can be adjusted by deflecting the electrons with electrical fields, magnetic fields, or both.

Question Text

Consider a CRT with an electron beam average current of 64 \(\rm\ \mu A\). How many electrons strike the screen every 2 minutes?

Answer Section

Please enter in a numeric value.

Attribution

Problem is licensed under the CC-BY-NC-SA 4.0 license.