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A parallel plate copacitor is first char...

A parallel plate copacitor is first charged and then isolated, and a dielelctric slab is introduced between the plates. The quantity that remains unchanged is.

A

Charge Q

B

Potential V

C

Capacity C

D

Energy U

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The correct Answer is:
A
Charge q remains unchanged when capacitor is the charged then dielectric slab is introduced between the plates.
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PHYSICS WALLAH-ELECTROSTATIC POTENTIAL AND CAPACITANCE-LEVEL II
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