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Two capacitors of capacitances 
and 
are connected in series with a battery of electromotive force (e.m.f.) 
, as shown in the figure below.
Calculate the combined capacitance of the capacitors.
Use your answer in (a) to determine, for the capacitor of capacitance ,
the charge on one plate of the capacitor,
the energy stored in the capacitor.
.
.
.
