Thread: Calculate the gain in kinetic energy of each electron.

Question:
The electrons in a TV tube are accelerated by a p.d. of between the filament and the screen. The charge of the electron is . Calculate the gain in kinetic energy of each electron.

Don't know which equation to use!, need help

Originally Posted by looi76

Question:
The electrons in a TV tube are accelerated by a p.d. of between the filament and the screen. The charge of the electron is . Calculate the gain in kinetic energy of each electron.

Don't know which equation to use!, need help

You are told the amount of work done on each electron, 20 kW.

Is it possible you meant that the potential difference is 20 kV? In that case,


-Dan