An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of the electrical field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in through the same vertical distance h. The time fall of the electron, in comparison to the time fall of the proton is:
(2) 5 times greater
(3) 10 times greater
The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A is:
(1) independent of the distance between the plates.
(2) linearly proportional to the distance between the
(3) proportional to the square root of the distance
between the plates.
(4) inversely proportional to the distance between