Question

# Effective capacitance of parallel combination of two capacitors and is . when these capacitors are individually connected to a voltage source of , the energy stored in the capacitor is 4 times that of . If these capacitors are connected in series, their effective capacitance will be:

A
B
C
D
Medium
JEE Mains

## Solution

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Correct option is C)

## Given that (Parallel combination)       ...(1) They are now connected to the same voltage source of . The energy stored in the two capacitors are given by           Given that         ....(ii) From (i) and (ii), . , . When and are connected in series, the equivalent capacitance of the combination is given by

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