Q: The power output of a TV screen is 24W. If the accelerating voltage is 12,000V, calculate the number of electrons striking the screen per second.
mass of electron: 9.1x10^-31 kg
charge of electron: 1.6x10^-19 C
So far i've worked out the potential energy/work done as 1.92x10^-15 J but i'm not sure what to do next, according to the book im working from the answer is 1.25 x 10^16 electrons but I don't know how it is worked out.
mass of electron: 9.1x10^-31 kg
charge of electron: 1.6x10^-19 C
So far i've worked out the potential energy/work done as 1.92x10^-15 J but i'm not sure what to do next, according to the book im working from the answer is 1.25 x 10^16 electrons but I don't know how it is worked out.