Electrostatics-Capacitors (NEET Physics): Questions 5 - 8 of 28

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Question number: 5

» Electrostatics » Capacitors

MCQ▾

Question

Five identical plates each of area A are joined as shown in the figure. The distance between the plates is d. The plates are connected to a potential difference of V volts. The charge on plates 1 and 4 will be respectively

5 identical plates each with Area A

5 Identical Plates Each With Area A

Five identical plates each of area A are joined in figure.

Choices

Choice (4) Response
a.

ϵ0AVd,2ϵ0AVd

b.

ϵ0AV2d,ϵ0Ad

c.

ϵ0AV2d,2ϵ0AV2d

d. All of the above

Question number: 6

» Electrostatics » Capacitors

MCQ▾

Question

The resultant capacitance of given circuit is

Circuit Diagram with 6 capacitors

Circuit Diagram With 6 Capacitors

6 Capacitor connected as shown in figure between P and Q.

Choices

Choice (4) Response
a.

3C

b.

C/3

c.

2C

d. None of the above

Question number: 7

» Electrostatics » Capacitors

MCQ▾

Question

A parallel plate capacitor is charged to a potential. difference of 50V. It is discharged through a resistance. After 1 second, the potential difference between plates becomes 40V. Then

Choices

Choice (4) Response
a.

Potential difference between the plates after 2 seconds will be 20 V

b.

Fraction of stored energy after 1 second is 16/25

c.

Potential difference between the plates after 2 seconds will be 30V

d.

Fraction of stored energy after 1 second is 4/5

Passage

Capacitor C 3 in the circuit is variable capacitor (its capacitance can be varied). Graph is plotted between potential differences V, (across capacitor C 1) versus C 3, Electric potential V 1 approaches on asymptote of 10 volts as C 3 → ∞

 Circuit Diagram - capacitors C2 and C3

Circuit Diagram - Capacitors C2 and C3

In figure, capacitors C2 and C3 connected in parallel and C1 connected in series. Capacitor C3 is variable capacitor.

Graph of V1→C3 for potential difference

Graph of V1→C3 for Potential Difference

Figure shows the curve between p. d (across capacitor C1) versus variable capacitor C3.

Question number: 8 (1 of 3 Based on Passage) Show Passage

» Electrostatics » Capacitors

MCQ▾

Question

The value of C 3 for which potential difference across C 1 will become 8V, is

Choices

Choice (4) Response
a.

4.5 C 1

b.

1.5 C 1

c.

2.5 C 1

d.

3.5 C 1

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