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STD 12 - 2. Electric potential and capacitance — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 2. Electric potential and capacitance4 Marks
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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