Electrostatics-Capacitors (NEET Physics): Questions 21 - 24 of 28

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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.

C1VC1+C2

b.

C2VC1+C2

c.

(1+C2C1)

d.

(1C2C1)

Question number: 22

» Electrostatics » Capacitors

MCQ▾

Question

Two capacitors of capacitances 3µF and 6µFare charged to a potential of 12V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other. The potential difference across each will be

Choices

Choice (4) Response

a.

6 volt

b.

zero

c.

4 volt

d.

3 volt

Question number: 23

» Electrostatics » Capacitors

MCQ▾

Question

The capacitance of a parallel plate condenser depends on

(1) Area of the plates

(2) Medium between the plates

(3) Distance between the plates

(4) Metal of the plates

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

Question number: 24

» Electrostatics » Capacitors

Assertion-Reason▾

Assertion (Ꭺ)

The force with which one plate of a parallel plate capacitor is attracted towards the other plate is equal to square of surface density per 2 0 per unit area.

Reason (Ꭱ)

The electric field due to one charged plate of the capacitor at the location of the other is equal to surface density per 2 0.

Choices

Choice (4) Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is true but Ꭱ is false

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