Which of the following quantities does not change , When a glass slab is placed completely in the air gap with in the plates of a charged parallel plate condenser.
A
Energy of the condenser
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B
Capacity
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C
Intensity of electric field
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D
Charge
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Solution
The correct option is D Charge Inside a charged capacitor, if the dielectric medium is placed, capacitance increases and the charge remains same ,as the charge is independent of the presence of medium.