Free Electromagnetic Induction MCQs with Answers
288 Electromagnetic Induction MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
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Read the Electromagnetic Induction notesFree MDCAT chapter notes with key terms288 questions · page 3 of 15
- A. England and USA
- B. France and USA
- C. China and USA
- D. None of these
Explanation: Michael Faraday belonged to England and Joseph Henry belonged to the USA.
Correct answer: England and USA- A. The coil is rotated
- B. The coil is stationary
- C. Both (a) and (b)
- D. None of these
Explanation: When the coil is rotated in the magnetic field, the area enclosed by the coil's loops changes orientation relative to the field lines.
Correct answer: The coil is rotated- A. Ampere
- B. Volt
- C. Joule/coulomb
- D. Both (b) and (c)
Explanation: The unit of induced electromotive force (emf) can indeed be expressed as both Volt and Joule/coulomb.Volt (V): The volt is the standard…
Correct answer: Both (b) and (c)- A. emf passes through the conductor
- B. emf is induced across its ends
- C. Both (a) and (b)
- D. None of these
Explanation: When a conductor is moved parallel to the lines of magnetic field, neither emf passes through the conductor nor is it induced across its…
Correct answer: None of these- A. Lenz
- B. Faraday
- C. Coulomb
- D. Ampere
Explanation: The law of electromagnetic induction is related to Faraday.The law of electromagnetic induction, also known as Faraday's law, is…
Correct answer: Faraday- A. Electric generator
- B. Ammeter
- C. Galvanometer
- D. All of above
Explanation: Faraday's law of electromagnetic induction has been used in the construction of Electric generators.Faraday's law of electromagnetic…
Correct answer: Electric generator- A. Induced current
- B. Induced emf
- C. Both (a) & (b)
- D. None of these
Explanation: Lenz's law refers to Induced current.Lenz's law states that the direction of the induced electromotive force (emf) and the induced current…
Correct answer: Induced current48. When we say that Lenz law refers to induced currents, it means that we can apply it directly to:
- A. Open circuits
- B. Closed conducting loop
- C. Every circuits
- D. None of these
Explanation: When we say that Lenz's law refers to induced currents, it means that we can apply it directly to Closed conducting loops.Lenz's law…
Correct answer: Closed conducting loop- A. Electric current
- B. Conventional current
- C. Induced current
- D. All of above
Explanation: The current produced due to electromagnetic induction is specifically called Induced current.When a conductor is exposed to a changing…
Correct answer: Induced current- A. Motional emf
- B. emf
- C. Induced emf
- D. None of the above
Explanation: The electromotive force (emf) produced by the motion of a coil across a magnetic field is specifically referred to as Motional emf.
Correct answer: Motional emf- A. Lenz law
- B. Faraday's law
- C. Oersted law
- D. None of them
Explanation: The statement "The rate of change of magnetic flux is directly proportional to the induced emf" is a description of Faraday's law of…
Correct answer: Faraday's law- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Faraday's second law of electromagnetic induction states that, the magnitude of induced emf is equal to the rate of change of flux…
Correct answer: Option B- A. Lenz's law
- B. Faraday's law
- C. Ampere's law
- D. Coulomb's law
Explanation: The statement "The direction of the induced current is always to oppose the change that causes the current" is a statement of Lenz's…
Correct answer: Lenz's law- A. Law of conservation of charge
- B. Law of conservation of energy
- C. Law of conservation of mass
- D. Law of conservation of momentum
Explanation: Lenz's law is also a statement of Law of conservation of energy. Lenz's law, formulated based on the principle of conservation of energy…
Correct answer: Law of conservation of energy- A. Direction of the loop
- B. Shape of the loop
- C. Resistance of the loop
- D. Speed of the loop
Explanation: The Explanation of this question will be added soon!
Correct answer: Speed of the loop- A. Induced emf
- B. Induced current
- C. Motional emf
- D. None of the above
Explanation: The Explanation of this question will be added soon!
Correct answer: Induced emf- A. Replacing the loop by a coil
- B. Moving the loop faster
- C. Using the strong magnetic field
- D. All of the above
Explanation: The induced current can be increased by All of the these.Replacing the loop by a coil: A coil, also known as a solenoid, consists of…
Correct answer: All of the above- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: The Explanation of this question will be added soon!
Correct answer: Option A- A. Induced current is produced in it
- B. No induced current is produced
- C. Magnet will attract the loop
- D. None of above
Explanation: The Explanation of this question will be added soon!
Correct answer: Induced current is produced in it- A. Electro magnetism
- B. Electromagnetic induction
- C. Electric polarisation
- D. All of above
Explanation: The Explanation of this question will be added soon!
Correct answer: Electromagnetic induction