The rate of change of magnetic flux is directly proportional to the induced emf is called:
Correct answer: B. Faraday's law
- 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 electromagnetic inductionFaraday's law of electromagnetic induction states that the electromotive force (emf) induced in a closed circuit is directly proportional to the rate of change of magnetic flux through the circuit. In mathematical terms, this is expressed as EMF=− dΦ/dt Where:EMF is the induced electromotive force,dΦ/dt is the rate of change of magnetic flux.This law was discovered and formulated by Michael Faraday in the early 19th century and is one of the fundamental principles of electromagnetism.
Last updated
About Electromagnetic Induction
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.
Practise Electromagnetic Induction
288 free Electromagnetic Induction MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A 25 wattand 100 watt bulbs are joined in series and connected to the mains.Which bulb will glow brighter?
A 50 mH coil carries a current of 2A. The energy stored in its magnetic field is:
A.C generator is a device which converts:
A.C is converted into D.C by:
A coil has an inductance of 0.02 Henry. When a current in the coil is changing at the rate of 150 A/S then the induced emf will be: