A 2 μF capacitor and a 4 μF capacitor are connected in series across a 12 V DC supply. What will be the resulting (a) charge on the plates of each capacitor and (b) potential difference across each?...

A 2 μF capacitor and a 4 μF capacitor are connected in series across a 12 V DC supply. What will be the resulting (a) charge on the plates of each capacitor and (b) potential difference across each?

What will the total capacitances be when three capacitors, 2 μF, 4 μF and 8 μF, are connected in (a) series, (b) parallel?