JEE · NEET Previous Year Question
A parallel plate capacitor of capacitance with a dielectric slab in between its plates is connected to a battery. It has a potential difference across its plates. When the dielectric slab is removed, keeping the capacitor connected to the battery, the new capacitance and potential difference are and respectively. Then,
Topic: JEE PYQ
Answer: D. Full step-by-step solution below.
- A
- B
- C
- D
Correct answer: D
Solution
(d) The capacitance of a capacitor decreases when the dielectric is removed.With dielectric, capacitance,
On removing dielectric, capacitance,
Therefore, .
Also, battery is not removed, thus,
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