1) a cathode-ray tube is a type of tube.
2) an n-type semiconductor is made by adding a trace amount of phosphorus to
3) communication devices use circuits known as to make them more portable, reliable, and affordable.
4) what solid-state component in a mobile phone maintains proper voltage levels in the circuits? a. transistors b. capacitors c. diodes d. microchips
5.) the electric field around a positive charge points the charge.
6) electric force is proportional to the amount of charge and proportional to the square of the distance between the charges.

it is okay if you can only answer a few
only answer if you have specific answers : )