Physics Electrostatics Potential & Capacitance Karnataka - CET Previous Year Question MCQ (Single Correct)

A parallel plate capacitor is charged by connecting a 2 V battery across it. It is then disconnected from the battery and a glass slab is introduced between plates. Which of the following pairs of quantities decrease?

A
Energy stored and capacitance.
B
Charge and potential difference.
C
Capacitance and charge,
D
Potential difference and energy stored.

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The correct answer is:
D

When battery is disconnected, charge remains constant. On introducing glass slab, capacity increases. Potential difference and energy stored decreases.

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