Electromagnetic Induction MCQ Questions Class 12 Physics Chapter 6
NCERT MCQ Questions for Class 12 Physics Chapter 6 Electromagnetic Induction. Electromagnetic Induction MCQ Questions with Answers from Class 12 Physics.
Electromagnetic Induction MCQ Questions Class 12 Physics Chapter 6
Electromagnetic Induction Multiple Choice Questions with Answers Class 12 Physics Chapter 6 PDF is available.
1) The relative motion between the magnet and the coil that is responsible for generation of
a) Magnetic field in the coil
b) Current in the coil
c) Voltage in the coil
d) None
Ans: b) current in the coil
2) Magnetic flux is the
a) Vector quantity
b) Scalar quantity
c) Tensor quantity
d) None
Ans: b) scalar quantity
3) The SI unit of magnetic flux is
a) Weber
b) Tm2
c) Tesla
d) Both a and b
Ans: d) both a and b
4) The magnitude of the induced emfin a circuit is equal to the time rate of change of ____ through the coil.
a) Magnetic moment
b) Magnetic field
c) Magnetic susceptibility
d) Magnetic flux
Ans: d) magnetic flux
5) The magnitude of the induced emf in a circuit is equal to the time rate of change of magnetic flux through the coil, this is the
a) Lenz’s law
b) Faraday’s law of electromagnetic induction
c) Both a and b
d) Gauss’s law
Ans: b) Faraday’s law of electromagnetic induction
6) The polarity not induced emf is such that it tends to produce a current which opposes the change in magnetic flux that produced it, this is
a) Faraday’s law of electromagnetic induction
b) Lenz’s law
c) Both a and b
d) None
Ans: b) Lenz’s law
7) The induced emfBlv is called as
a) Rotational emf
b) Motional emf
c) Magnetic emf
d) Induced emf
Ans: b) motional emf
8) The advantages of eddy currents are used in applications
a) Magnetic braking in trains
b) Electromagnetic damping
c) Induction furnace
d) All
Ans: d) all
9) Inductance is the
a) Scalar quantity
b) Vector quantity
c) Both a and b
d) None
Ans: a) scalar quantity
10) The dimensions of inductance are
a) [M L2 T-2 A-2]
b) [M L-2 T-2 A-2]
c) [M L T-2 A-2]
d) None
Ans: b) [M L-2 T-2 A-2]
11) The SI unit of inductance is
a) Ohm
b) Farad
c) Henry
d) Weber
Ans: c) Henry
12) The production of induced emfin a single coil due to change of flux through the coil by means of varying current through the same coil, this is called as
a) Mutual induction
b) Self induction
c) Both a and b
d) None
Ans: b) self induction
13) The self inductance L of the coil is also called as
a) Coefficient of self induction of the coil
b) Coefficient of mutual induction of coil
c) Self induction
d) None
Ans: a) coefficient of self induction of the coil
14) The self inductance of the coil depends on the
a) Geometry
b) Permeability of the medium
c) Both a and b
d) None
Ans: c) both a and b
15) AC generator converts
a) Electrical energy into mechanical energy
b) Electrical energy into thermal energy
c) Mechanical energy into electrical energy
d) None
Ans: c) mechanical energy into electrical energy
16) The current whose direction changes periodically is called as
a) Direct current
b) Eddy current
c) Focault’s current
d) Alternating current
Ans: d) alternating current
- In case you have missed:- Previous Chapter MCQ Questions
17) Large dams are the source of
a) Chemo electric generators
b) Hydro electric generators
c) Thermo electric generators
d) None
Ans: b) hydro electric generators
18) The generators in which steam at high pressure produces the rotation of the armature are called as
a) Thermal generators
b) Nuclear power generators
c) Hydro electric generators
d) Thermo electric generators
Ans: a) thermal generators
19) If nuclear file is used to generate electricity in the generators then they are called as
a) Thermal generators
b) Hydro electric generators
c) Nuclear power generators
d) None
Ans: c) nuclear power generators
20) The frequency of AC current in India is about
a) 20Hz
b) 30Hz
c) 500Hz
d) 50Hz
Ans: d) 50Hz
21) The frequency of AC current in the USA is about
a) 50Hz
b) 30Hz
c) 60Hz
d) 40Hz
Ans: c) 60Hz
22) The magnetic flux through a surface of area A placed in a uniform magnetic field B is given by
a) BAsinx
b) BA Cosx
c) BA
d) None
Ans: b) BA Cosx
23) When a metal rod of length l is placed normal to uniform magnetic field B and moved with a velocity v perpendicular to the field then emf induced across its ends is given by
a) Blv
b) Blv2
c) Bl2v
d) None
Ans: a) Blv
24) Changing magnetic field set up the current loops nearby metal bodies and dissipate electrical energy as heat, such currents are called as
a) Conventional current
b) AC current
c) DC current
d) Eddy current
Ans: d) eddy currents
25) The ratio of flux linkage to the current is called as
a) Capacitance
b) Inductance
c) Induction
d) None
Ans: b) inductance
26) The self inductance of the coil is the measure of the _____ of the coil against the change of current through the coil.
a) Weight
b) Inertia
c) Force
d) Magnetic field
Ans: b) inertia
27) The emf induced is measured in
a) Ampere
b) Ohm
c) Weber
d) Volt
Ans: d) volt
28) Mutual inductance is measured in
a) Ohm
b) Farad
c) Henry
d) Tesla
Ans: c) Henry
29) Self inductance is measured in
a) Ohm
b) Farad
c) Henry
d) Tesla
Ans: c) Henry
30) The dimensions of emf are given by
a) [M L T-3 A-1]
b) [M L2 T-3 A-1]
c) [M L2 T-2 A-1]
d) [M L2 T-2 A-3]
Ans: b) [M L2 T-3 A-1]
31) The dimensions of self inductance and mutual inductance are given by
a) [M L2 T-3 A-2]
b) [M L-2 T-2 A-2]
c) [M L2 T-2 A-2]
d) [M L2 T-2 A-2]
Ans: d) [M L2 T-2 A-2]
- In case you have missed:- Next Chapter MCQ Questions
