An uncharged capacitor is connected in series with a battery, a switch and a resistor, as shown in the figure below.
The battery has e.m.f. 
and negligible internal resistance. The capacitance of the capacitor is 
. The switch is closed at time 
. During the time interval to 
, the charge passing through the resistor is 
.
Calculate the energy transfer in the battery during the time interval to .
Determine, for the capacitor at time ,
the potential difference 
across the capacitor,
the energy stored in the capacitor.
Suggest why your answers in (a)(i) and (a)(ii) part 2 are different.
.
.
.
