Two identical capacitors are joined in parallel, charged to poten… - Vidyadip

MCQ

Two identical capacitors are joined in parallel, charged to potential $V$, separated and then, connected in series, $i.e.$, the positive plate of one is connected to the negative plate of the other. Then

✓
the charges on the free plates connected together are destroyed
B
charges on the free plates are destroyed
C
the energy stored in the system increases
D
the potential difference between the free plates is $2\,V$

✓

Answer

Correct option: A.

the charges on the free plates connected together are destroyed

a
Both capacitors are charged to the same potential, so they acquire the same charge. When connected in series, the charges on free plates neutralise each other.

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