Faraday's law explains how electric field will interact with:
Correct answer: B. Magnetic field
- A. Electric field
- B. Magnetic field
- C. Battery
- D. None of these
Explanation
Faraday's law is one of the fundamental principles of electromagnetism. It states that a changing magnetic field will induce an electric field. This means that if you have a magnetic field that is changing over time, it will create an electric field that is also changing over time. The electric field will interact with charged particles, such as electrons, causing them to move. This movement of charged particles generates an electric current. This principle is used in many devices, including generators, transformers, and motors. For example, a generator uses Faraday's law to convert mechanical energy into electrical energy. When a coil of wire is rotated in a magnetic field, the changing magnetic field induces an electric field in the coil, which generates an electric current. This current can be used to power electrical devices.
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: