Electrostatic Potential and Capacitance MCQ Questions Class 12 Physics Chapter 2
NCERT MCQ Questions for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance. Electrostatic Potential and Capacitance MCQ Questions with Answers from Class 12 Physics.
Electrostatic Potential and Capacitance MCQ Questions Class 12 Physics Chapter 2
Electrostatic Potential and Capacitance Multiple Choice Questions with Answers Class 12 Physics Chapter 2 PDF is available.
Multiple choice questions:
1) The forces in which sum of kinetic energy and potential energy is conserved are called as
a) Electrostatic forces
b) Nuclear forces
c) Conservative forces
d) Both a and c
Ans: c) conservative forces
2) Which of the following are conservative forces
a) Spring force
b) Gravitational force
c) Both a and b
d) None
Ans: c) both a and b
3) Coulomb’s force between two stationery charges is also
a) Non conservative force
b) Conservative force
c) Both a and b
d) None
Ans: b) conservative force
4) The work done by the external force in bringing the charge q from infinity to a point is called as
a) Electric field due to charge q at that point
b) Potential energy due to charge q at that point
c) Both a and b
d) None
Ans: b) potential energy due to charge q at that point
5) Work done by an external force in bringing a unit positive charge from infinity to a point is called as
a) Potential energy at that point
b) Electric field at that point
c) Electric potential at that point
d) None
Ans: c) electric potential at that point
6) The electrostatic potential due to a point charge is directly proportional to
a) 1/r
b) 1/r2
c) r
d) r2
Ans: a) 1/r
7) The electrostatic potential due to a point charge is inversely proportional to
a) 1/r
b) 1/r2
c) r
d) r2
Ans: c) r
8) The electrostatic potential due to an electric dipole is directly proportional to
a) 1/r
b) 1/r2
c) r
d) r2
Ans: b) 1/r2
9) The electrostatic potential due to an electric dipole is inversely proportional to
a) 1/r
b) 1/r2
c) r
d) r2
Ans: d) r2
10) The surface with a constant value of potential at all points on the surface is called as
a) Equielectric field surface
b) Equipotential surface
c) Constant potential surface
d) None
Ans: b) equipotential surface
11) Equipotential surfaces of a single point charge are _____ surfaces centred at the charge.
a) Concentric cylindrical
b) Concentric circular
c) Concentric spherical
d) None
Ans: c) concentric spherical
12) For any charge configuration, equipotential surface through a point is _____ to electric field at that point.
a) Perpendicular
b) Normal
c) Parallel
d) Both a and b
Ans: d) both a and b
13) Electric field is in the direction in which the potential ____ steepest.
a) Increases
b) Decreases
c) Remains same
d) None
Ans: b) decreases
14) The magnitude of the electric field is given by the change in magnitude of potential per unit displacement _____ to the equipotential surface at the point.
a) Normal
b) Perpendicular
c) Parallel
d) Both a and b
Ans: d) both a and b
15) Potential energy is the characteristic of the
a) The present state of the configuration
b) The way the state is achieved
c) Both a and b
d) None
Ans: a) the present state of the configuration
16) Inside a conductor electrostatic field is
a) Infinite
b) Constant
c) Zero
d) None
Ans: c) zero
17) At the surface of a charged conductor electrostatic field must be _____ to the surface at every point.
a) Normal
b) Perpendicular
c) Parallel
d) Both a and b
Ans: d) both a and b
18) The interior of a conductor can have no excess ____ in the static situation.
a) Electric field
b) Electric potential
c) Electric energy
d) Charge
Ans: d) charge
19) Electrostatic potential is ______ throughout the volume of the conductor and has _____ value on its surface.
a) Same, constant
b) Constant, same
c) Different, same
d) Constant, different
Ans: b) constant, same
20) Dielectrics are ____ substances.
a) Conducting
b) Non conducting
c) Both a and b
d) None
Ans: b) non conducting
21) The molecules in which centres of positive and negative charges coincide are called as
a) Polar molecules
b) Non polar molecules
c) Both a and b
d) None
Ans: b) non polar molecules
22) Non polar molecules has
a) Permanent dipole moment
b) No permanent dipole moment
c) Both a and b
d) None
Ans: b) no permanent dipole moment
23) Which of the following are non polar molecules
a) O2
b) H2
c) Both a and b
d) None
Ans: c) both a and b
24) The molecules in which centres of positive and negative charges are separated are called as
a) Non polar molecules
b) Polar molecules
c) Both a and b
d) None
Ans: b) polar molecules
25) Polar molecules has
a) No permanent dipole moment
b) Permanent dipole moment
c) Both a and b
d) None
Ans: b) permanent dipole moment
26) Ionic molecules are
a) Polar molecules
b) Non polar molecules
c) Both a and b
d) None
Ans: a) polar molecules
27) Which of the following are polar molecules
a) HCl
b) H2O
c) Both a and b
d) H2
Ans: c) both a and b
- In case you have missed:- Previous Chapter MCQ Questions
28) The dipole moment per unit volume is called as
a) Dielectrics
b) Polarisation
c) Electric field
d) Electric dipole moment
Ans: b) polarisation
29) A capacitor is a system of two conductors separated by _____
a) Conductors
b) Dielectrics
c) An insulators
d) None
Ans: c) an insulators
30) The capacitance of the capacitor is given by
a) C = Q/ V
b) C = V/Q
c) C = QV
d) Q = C/V
Ans: a) C = Q/ V
31) The SI unit of capacitance is
a) Henry
b) Hertz
c) Farad
d) None
Ans: c) farad
32) 1F =
a) 1C V
b) 1C/V
c) -1CV
d) -1C/V
Ans: b) 1C / V
33) The capacitance of the capacitor is directly proportional to the
a) Q
b) V
c) Both a and b
d) None
Ans: a) Q
34) The capacitance of the capacitor is inversely proportional to
a) Q
b) V
c) Both a and b
d) None
Ans: b) V
35) 1 micro farad =
a) 10-7
b) 10-6
c) 10-5
d) 10-9
Ans: b) 10-6
36) 1 nano farad =
a) 10-6
b) 10-9
c) 10-12
d) 10-15
Ans: b) 10-9
37) 1 Pico farad =
a) 10-9
b) 10-6
c) 10-12
d) 10-15
Ans: c) 10-12
38) The direction of electric field is from
a) Negative to positive plate
b) Positive to negative plate
c) Both a and b
d) None
Ans: b) positive to negative plate
39) The factor by which the capacitance increases from its vacuum value when the dielectric is inserted fully between the plates of a capacitor, is called as
a) Dielectric
b) Dielectric constant of the substance
c) Permittivity
d) Permiability
Ans: b) dielectric constant of the substance
40) If the capacitors having capacitance C1 and C2 are connected in series then their resultant capacitance is given by
a) 1/C = 1/C1 + 1/C2
b) 1/C = 1/C1 – 1/C2
c) C = C1 + C2
d) None
Ans: a) 1/C = 1/C1 + 1/C2
41) In series combination of capacitors the effective capacitance
a) Increases
b) Decreases
c) Remains same
d) None
Ans: b) decreases
42) If the capacitors having capacitance C1 and C2 are connected in parallel then their effective capacitance is given by
a) C = C1 – C2
b) C = C1 + C2
c) 1/C = 1/C1 + 1/C2
d) 1/C = 1/C1 – 1/C2
Ans: b) C = C1 + C2
43) In parallel combination of capacitors, the effective capacitance
a) Decreases
b) Increases
c) Remains same
d) None
Ans: b) increases
44) The energy stored per unit volume of a space is called as
a) Energy efficiency
b) Energy density
c) Electric field
d) Polarisation
Ans: b) energy density
45) The electric potential is measured in
a) Coulomb
b) Volt
c) Watt
d) Joule
Ans: b) volt
46) The dimensions of electric potential are
a) [M1 L2 T-3 A-1]
b) [M L-2 T3 A-1]
c) [M L-3 T-3 A-2]
d) [M L-3 T-2 A-1]
Ans: a) [M1 L2 T-3 A-1]
47) The capacitance is measured in
a) Volt
b) Farad
c) Henry
d) Hertz
Ans: b) farad
48) The dimensions of capacitance are
a) [M L-2 T4 A-2]
b) [M L-2 T-4 A2]
c) [M-1 L-2 T-4 A2]
d) None
Ans: c) [M-1 L-2 T-4 A2]
49) The polarisation is measured in
a) Cm
b) Cm2
c) C/m2
d) None
Ans: c) C/m2
50) The dimensions of polarisation are
a) [L A T]
b) [L-1 A -1 T]
c) [L A-1 T-1]
d) [L-2 A T]
Ans: d) [L-2 A T]
51) Dielectric constant is the
a) Vector quantity
b) Scalar quantity
c) Dimensions less quantity
d) None
Ans: c) dimensions less quantity
52) Electrostatic is the branch of physics which deals with the
a) Forces between charges in motion
b) Forces between charges in rest
c) Both a and b
d) None
Ans: b) forces between charges in rest
53) Potential due to charge q at its own location is
a) Zero
b) Constant
c) Infinite
d) None
Ans: c) infinite
- In case you have missed:- Next Chapter MCQ Questions