Electrostatics-Capacitors (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 19 - 21 of 29

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Question number: 19

» Electrostatics » Capacitors

MCQ▾

Question

Figure given below shows two identical parallel plate capacitors connected to a battery with switch S closed. The switch is now opened and the free space between the plates of capacitors is filled with a dielectric of dielectric constant 3. What will be the ratio of total electrostatic energy stored in both capacitors before and after the introduction of the dielectric?

Circuit Diagram - Two identical parallel plate capacitors

Circuit Diagram - Two Identical Parallel Plate Capacitors

Two identical parallel plate capacitors connected to a battery with switch S closed.

Choices

Choice (4) Response

a.

5: 1

b.

3: 1

c.

3: 5

d.

5: 3

Question number: 20

» Electrostatics » Capacitors

Assertion-Reason▾

Assertion (Ꭺ)

If the distance between parallel plates of a capacitor is halved and dielectric constant is made three times, then the capacitance becomes 6 times.

Reason (Ꭱ)

Capacity of the capacitor does not depend upon the nature of the material of plates.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 21

» Electrostatics » Capacitors

MCQ▾

Question

A capacitor of capacity C 1 is charged up to V volt and then connected to an uncharged capacitor of capacity C 2. Then final potential difference across each will be

Choices

Choice (4) Response

a.

b.

c.

d.

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