Question

Which of the following capacitors have the largest charge :

a) A parallel plate capacitor with an area of 40 cm^2 and a plate separation of 16 mm connected to a 20-V battery.

b) A parallel plate capacitor with an area of 80 cm^2 and a plate separation of 8 mm connected to a 80-V battery.

c) A parallel plate capacitor with an area of 20 cm^2 and a plate separation of 4 mm connected to a 40-V battery.

d) A parallel plate capacitor with an area of 20 cm^2 and a plate separation of 8 mm connected to a 40-V battery.

e) All of the capacitors have the same charge.

Answer 1

how !

Answer 2

how can i calculate them !

Answer 3

okay, think about the relation of charge, capacitance, voltage, the area and the separation between conducting sheets.

Answer 4

use the formulas, and see how they relate with each other.

Answer 5

is formula for parallel plate capacitor known to you?
is formula for capacitor's charge known to you?

Answer 6

noo actually !! :/

Answer 7

????????