Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Electromagnetic Induction. In this article, we will provide 50+ MCQ questions on the Electromagnetic Induction, along with detailed solutions to help you prepare for the JEE Mains exam.
These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Electromagnetic Induction JEE Mains MCQ Questions with Answers.
Electromagnetic Induction JEE Mains MCQ
Faraday’s law of electromagnetic induction states that the induced electromotive force (emf) in a coil is directly proportional to:
A) The number of turns in the coil
B) The rate of change of magnetic field through the coil
C) The resistance of the coil
D) The current flowing through the coil
Lenz’s law is a consequence of:
A) Ampere’s law
B) Gauss’s law
C) Ohm’s law
D) Faraday’s law
The phenomenon of electromagnetic induction is based on the principle of conservation of:
A) Charge
B) Energy
C) Momentum
D) Angular momentum
A change in the magnetic field through a closed loop induces:
A) A current in the loop
B) A voltage across the loop
C) Both current and voltage in the loop
D) Neither current nor voltage in the loop
The direction of the induced current in a wire can be determined by:
A) Lenz’s law
B) Ampere’s law
C) Faraday’s law
D) Kirchhoff’s law
A loop of wire is placed in a magnetic field. If the magnetic field increases, the induced current in the loop flows:
A) Clockwise
B) Counterclockwise
C) There is no induced current
D) The direction cannot be determined
The phenomenon of self-induction occurs in:
A) A solenoid
B) A capacitor
C) A transformer
D) A coil carrying a changing current
The unit of self-inductance is:
A) Henry (H)
B) Ohm (Ω)
C) Farad (F)
D) Tesla (T)
Mutual induction occurs when:
A) The magnetic field of one coil changes
B) The magnetic field of one coil induces a current in another coil
C) Two coils are placed close to each other
D) All of the above
The unit of mutual inductance is:
A) Henry (H)
B) Ohm (Ω)
C) Farad (F)
D) Tesla (T)
The induced emf in a coil can be increased by:
A) Increasing the number of turns in the coil
B) Increasing the magnetic field strength
C) Increasing the rate of change of magnetic field
D) All of the above
A changing magnetic field can induce an emf in a conductor by:
A) Moving the conductor relative to the magnetic field
B) Changing the magnetic field strength
C) Changing the orientation of the magnetic field
D) All of the above
The phenomenon of electromagnetic induction is the basis for the operation of:
A) Generators
B) Transformers
C) Inductors
D) All of the above
A transformer works on the principle of:
A) Mutual induction
B) Self-induction
C) Electromagnetic induction
D) Magnetic resonance
In a step-up transformer, the number of turns in the secondary coil is:
A) Less than the number of turns in the primary coil
B) Greater than the number of turns in the primary coil
C) Equal to the number of turns in the primary coil
D) The number of turns does not affect the transformation ratio
The efficiency of a transformer is given by:
A) (Output power) / (Input power)
B) (Input power) / (Output power)
C) (Output voltage) / (Input voltage)
D) (Input voltage) / (Output voltage)
The core of a transformer is made of a material with high:
A) Conductivity
B) Resistivity
C) Permeability
D) Capacitance
Eddy currents in a transformer core can be reduced by:
A) Using a laminated core
B) Increasing the core temperature
C) Increasing the core thickness
D) Using a non-magnetic core material
The primary coil of a transformer is connected to a 220 V AC power supply. If the turns ratio of the transformer is 1:10, the secondary voltage will be:
A) 22 V
B) 220 V
C) 2,200 V
D) 22,000 V
The primary coil of a transformer has 500 turns and the secondary coil has 2,000 turns. If the primary voltage is 120 V, the secondary voltage will be:
A) 30 V
B) 120 V
C) 480 V
D) 2,400 V
The power loss in a transformer is mainly due to:
A) Resistance of the windings
B) Eddy currents in the core
C) Hysteresis loss in the core
D) Both B) and C)
The direction of induced current in a coil can be reversed by:
A) Reversing the magnetic field
B) Changing the direction of motion of the coil
C) Changing the orientation of the coil
D) None of the above
The coefficient of mutual induction between two coils depends on:
A) The number of turns in each coil
B) The relative orientation of the coils
C) The permeability of the medium between the coils
D) All of the above
The self-induced emf in a coil can be reduced by:
A) Increasing the resistance of the coil
B) Increasing the number of turns in the coil
C) Decreasing the rate of change of current
D) None of the above
A conducting loop is moved out of a region of uniform magnetic field. The direction of the induced current in the loop is:
A) Clockwise
B) Counterclockwise
C) There is no induced current
D) The direction cannot be determined
The self-inductance of a solenoid depends on:
A) The length of the solenoid
B) The number of turns in the solenoid
C) The cross-sectional area of the solenoid
D) All of the above
The time constant of an LR circuit is given by:
A) L/R
B) R/L
C) L²/R
D) R²/L
The time constant of an RC circuit is given by:
A) R/C
B) C/R
C) RC
D) 1/(RC)
The unit of inductance is:
A) Henry (H)
B) Ohm (Ω)
C) Farad (F)
D) Tesla (T)
The unit of capacitance is:
A) Henry (H)
B) Ohm (Ω)
C) Farad (F)
D) Tesla (T)
We hope there JEE MCQ of Class 12 Electromagnetic Induction will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
