There are a few problems here but it would be helpful if The below solutions could be checked and some insight provided for the last one/any other mistakes
The problem & The Solution Attempts
A circuit with a 12V battery then on the row below in series with the battery is a 120nF capacitor and a
3.2(mu)F capacitor then in parallel with those resistors is another resistor of 50nF. On the immediate left of the battery is a 270Ohm resistor.
First I am asked to calculate the equivalent capacitance of the two capacitors in series for which I did:
(1.2x10^-7) + (3.2x10^-6) = 3.32x10^-6 F
Next I was asked to work out the equivalent capacitance of this capacitor network
For which I did:
((1.2x10^-7)x(3.2x10^-6)) / ((1.2x10^-7)+(3.2x10^-6))= 1.16x10^-7
(1.16x10^-7) + (5x10^-8) = 1.66x10-7F
After this I was then asked to calculate the maximum charge that can be stored in this capacitor network for which i did:
Then last but not least I was asked to calculate the maximum energy that could be stored in the smallest capacitor and I have no idea where to start.