An electron in a TV is accelerated toward the screen across a potential difference of 52.8 kV. How much kinetic energy does the electron gain while accelerating?

Question

An electron in a TV is accelerated toward the screen across a potential difference of 52.8 kV. How much kinetic energy does the electron gain while accelerating? 
How would you solve this?

Damon · Answer

52.8 * 10^3 * electron charge Voltage is electric field E times distance Force is E q Force times distance = work = energy gain = E q * distance = V q That is why they call voltage "potential" :)