QUIZ CAPACITOR

1. (a) Define the capacitance of a capacitor ! (1) (b) Figure below shows an arrangement of six identical capacitors. Each capacitor has capacitance 12 µF. The maximum safe potential difference across a single capacitor is 10 V.

(i) Find the total capacitance of the network between terminal X and Y (1)(ii) Find the total charge that can be stored in the network X and Y (2)(c) A capacitor of capacitance 12 µF is charged by a batteray of emf 10.0 V and neglible internal resistance .

(i) Calculate the charge of capacitor ! (1)(ii) The charged capacitor is then disconnected from the battery, and reconnected to the uncharged capacitor Z. After reconnection the potential difference across the 12 µF capacitor falls to 6 Volt. What is then the charge on the 12 µF (1)

12µF(iii) Calculate the capacitance of the capacitor Z. (2)(iv) If fully charged 12 µF capacitor as you obtain in c (i) then connected to resistor of 1 k. Calculate the rate of fall of the capacitor 12 µF PD after t = 24 ms (2)

X Y

Z