NCERT Class 12/MCQ Questions for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance Sample Test,Sample questions

Question: `A bird sitting on a high power line:`

1.gets killed instantly

2.gets a mild shock

3.gets a fatal shock

4.is not affected practically

Question: `A bird sitting on a high power line:`

1.gets killed instantly

2.gets a mild shock

3.gets a fatal shock

4.is not affected practically

1.cell is < E

2.cell is E

3.cell is > E

4.capacitor is E

1.(K + l).C

2.K.C

3.(K+1)2 C

4.(k – l) C

Question: `A polythene piece rubbed with wool is found to have a negative charge of 6.4 × 10-9c. How many electrons have been transferred during the process?`

1.4 × 1012

2.4 × 1011

3.4 × 1010

4.None of the these

Question: `A uniform electric field of 10 NC-1 exists in the vertically downward direction. What is the increase in the electric potential asonegoes up through a height of 300 cm ?`

1.15 V

2.30 V

3.45V

4.None of the above

1.75 V

2.100 V

3.85 V

4.50 V

Question: `An electron initially at rest is accelerated through a potential difference of one volt. The energy gained by electron is:`

1.1 J

2.1.6 × 10-19 J

3.10-19 J

4.None of the above

Question: `Choose the SI unit of electric potential energy :`

1.Joule

2.Coulomb

3.Netwon per coulomb

4.Erg

Question: `Choose the vector physical quantity:`

1.Electric flux

2.Electric potential

3.Electric potential energy

4.Electric intensity

Question: `IA capacitor is connected across a battery and the plate separation of capacitor is increased without removing the battery, then:`

1.capacitance will increase

2.charge stored will increase

3.energy stored will decrease

4.potential difference will increase

Question: ```If a +ve charge is moved from low to high potential region, the electric potential energy:```

1.decreases

2.increases

3.remain the same

4.may increase or decrease

Question: `In the above question:`

1.no electrons are transferred

2.electrons are transferred from wool to x polythene

3.electrons are transferred from polythene to wool

4.nothing can be decided

1.Charge

2.Potential

3.Capacitance

4.Electric field

1.4

2.3

3.5

4.6

Question: `nothing can be decided`

1.3.64 × 1020 kg

2.4 × 10-28 kg

3. 4 × 1010 kg

4.None of the these

1.1.8 J (

2.2.4 J

3.1.8 µJ

4. 2.4 µJ

1.copper

2.aluminium

3.zinc

4.None of these

1.1420 µF

2.712 µF

3.680 µF

4.540 µF

1.[MLT-3 A-1]

2. [ML2T-2A-1]

3.[ML2T-2A-3]

4.[MLT-2A-2]

Question: `The electric potential of earth is taken as:`

1.zero

2.infinity

3.unity

4.None of the above

1.π2

2.π

3.zero

4.3π2

1.Cm-1

2.Cm-2

3.Cm-3

4.JC-1

1.180 V

2.90 V

3.120 V

4.45 V

1.8 V, 4 V

2.6 V, 6 V

3. 4 V, 8 V

4.9 V, 3 V

1.72 V

2.60 V

3.48 V

4.zero

1. (r1/r2)²

2.(r1r2)²

3.(r1/r2)

4. (r2/r1)

Question: `Two copper spheres of the same radius, one solid and the other hollow, are charged to the same potential. Which will have more charge?`

1.Solid sphere

2.Hollow sphere

3.Both will have an equal charge

4.None of the above

Question: `What is the number of electrons in 100 g water?`

1..35 × 1024

2.3.35 × 1025

3.6.02 × 1023

4.None of the above

Question: `When a dielectric slab is introduced between the plates of a parallel plate capacitor which remains connected to a battery then charge on the plates relative to earlier charge is `

1.more

2.less

3.less or may be more

4.same

Question: `Which of the following is blocked by a capacitor ?`

1.A.C.

2.D.C.

3.Both A.C. and D.C.

4.Neither A.C. nor D. C

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