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# The electron gun in an old TV picture tube accelerates electrons

1) The electron gun in an old TV picture tube accelerates electrons between two parallel plates 1.6cm apart with a 22kV potential difference between them. The electrons enter through a small hole in the negative plate, accelerate, then exit through a small hole in the positive plate. Assume that the holes are small enough not to affect the electric field or potential.
(a) What is the electric field strength between the plates? (the answer in N/C)
(b) With what speed does an electron exit the electron gun if its entry speed is close to zero? (the answer in m/s)
2) Two 13-cm-diameter electrodes 0.52cm apart form a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 15V battery. What are the charge on each electrode, the electric field strength inside the capacitor, and the potential difference between the electrodes.
(a) What are the charge on each electrode, the electric field strength inside the capacitor, and the potential difference between the electrodes while the capacitor is attached to the battery? (the answer in C)
(d) After insulating handles are used to pull the electrodes away from each other until they are 1.1cm apart? The electrodes remain connected to the battery during this process. (the answer in C)
(g) After the original electrodes (not the modified electrodes of part D) are expanded until they are 21 in diameter while remaining connected to the battery? the answer in (C)
Kindly time in hours by which you like to have answers for these questions.
Customer: replied 4 years ago.

Is 12 hours enough for you?

Customer: replied 4 years ago.

This is question 1:

Customer: replied 4 years ago.

Question 2:

Customer: replied 4 years ago.

I hope this will help

I will use it and reply by due time.