# Physics 12 MCQ of Electrostatic Potential and Capacitance – Chapter 2

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Physics 12 MCQ of Electrostatic Potential and Capacitance, For both chapter from unit 1 is prepared for all the peoples who are looking for MCQ Questions and answers. As you know there are two chapters in UNIT I (Electrostatics). From Physics class 12 Unit I Electrostatics we have completed Chapter 1 MCQ questions solved in this page.

These Questions are for CBSE and all other boards which follows NCERT pattern.

## Physics 12 MCQ of Electrostatic Potential and Capacitance – Chapter 2

• q/r2
• q2/r
• q/r
• q2/r2

q/r

• 1 ev
• 10 eV
• 1 volt
• Zero

Zero

• E = -dV/dr
• E = dV/dr
• V = -dE/dr
• V = dE/dr

E = -dV/dr

• 20J
• 5J
• Zero
• 20μJ

Zero

• 20 V
• 120 V
• 5 V
• Zero

5 V

• positive
• negative
• constant
• zero

zero

• k = 2
• k = 1
• k = 1/2
• k = 4

k = 1

• 1F
• 1μF
• 711μF
• 9×109μF

711μF

#### Ques 9: When air in between the plates of a capacitor is replaced by mica of dielectric constant 6, its capacity

• remains unaffected
• reduced to 1/6th
• becomes 6 times
• non of the above

becomes 6 times

#### Ques 10: When a number of capacitors are connected in series between two points, all the capacitors possess same

• capacity
• potential
• charge
• none of the above

charge

### Physics 12 MCQ of Electrostatic Potential and Capacitance

#### Ques 11: When a number of capacitors are connected in parallel between two points, the equivalent capacitance

• increases
• decreases
• remains the same
• none of the above

increases

• 2
• 4
• 1
• 1/2

4

#### Ques 13: When two capacitors charged to different potentials are connected by a conducting wire, what is not true?

• charge lost by one is equal to charge gained by the other
• potentail lost by one is equal to potentail gained by the other
• some energy is lost
• both the capacitor acquire a common potential

potentail lost by one is equal to potentail gained by the other

#### Ques 14: The relation between dielectric constant K and electric susceptibility χ of a material is

• K = χ
• K = 1+χ
• χ = K+1
• K2 = (1+χ)(1−χ)

K = 1+χ

#### Ques 15: When charge is supplied to a conductor, its potential depends upon

• the amount of charge
• geometry and size of conductor
• both (a) and (b)
• only on (a)

both (a) and (b)

#### Ques 16: A parallel plate capacitor is charged by a battery. Once it is charged, battery is removed. Now a dielectric material is inserted between the plates of the capacitor. Which of the following does not change?

• electric field between the plates
• potential difference across the plates
• charge on the plates
• energy stored in the capacitor

• 2W
• 3W
• 4W
• W/2

4W

#### Ques 18: The variation of potential V with r and electric field with r for a point charge is correctly shown in the graphs

• • • • b

#### Ques 19: A charge Q is supplied to a metallic conductor. Which is true?

• Electric field inside it is same as on the surface
• electric potential inside is zero
• electric potential on the surface is zero
• electric potential inside is constant

electric potential inside is constant

• Q, Q
• Q/2, Q/2
• Q, -Q
• Q/2, -Q/2

Q, -Q

### NCET Physics 12 MCQ of Electrostatic

• 2V
• 4V
• 1V
• 6V

6V

#### Ques 22: The potential at the centre of the square is – • zero
• kq/a
• kq/a2
• kq/2a2

zero

• b/a
• a/b
• a2/b2
• b2/a2

b/a

#### Ques 24: Work done to bring a unit positive charge un-accelerated from infinity to a apoint inside electri field is called

• Electric field
• Electric potential
• Capacitance
• Electric flux

Electric potential

• Kq/x2
• Kq/x
• -Kq/x2
• -Kq/x

-Kq/x

#### Ques 26: Electric field is always

• Parallel to equipotential surface
• Perpendicular to equipotential surface
• It can be perpendicular and parallel as well
• It does not depend on distribution of charge

Perpendicular to equipotential surface

• E = 0; V = 0
• E = 0; V ≠ 0
• E ≠ 0; V = 0
• E ≠ 0; V ≠ 0

E = 0; V = 0

### Electrostatic Physics Class 12 MCQ Question and Answers

#### Ques 28: Shape of equipotential surface in uniform electric field will be :

• spherical normal to electric field
• random
• circular normal to electric field
• equidistant planes normal to electric field

equidistant planes normal to electric field

#### Ques 29: On reducing potential across a capacitor, its capacitance

• decreases
• increases
• remains constant
• first increases then decreases

increases

• U = CV/2
• U = CV2
• 2CV2
• VC2/2

U = CV/2

• nxC
• C/n
• n+C
• n2C

nxC

• C0/K
• KC0
• K2C0
• 2KC0

KC0

## Physics Chapter Wise MCQ Questions and Answers Physics 12 MCQ of Electrostatic Potential and Capacitance, physics electrostatic MCQ PDF download from here.

Updated: September 11, 2022 — 5:14 pm