Question

state farady's law of induction
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Answer 1

Answer:

Faraday's law of induction is a basic law of electromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force —a phenomenon known as electromagnetic induction.

Answer 2

Explanation:

Faraday's law of induction is a basic law of electromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force —a phenomenon known as electromagnetic induction.

Faraday’s Laws of Electromagnetic Induction:-

Faraday’s Laws of Electromagnetic Induction consists of two laws. The first law describes the induction of emf in a conductor and the second law quantifies the emf produced in the conductor. In the next few sections, let us learn these laws in detail.

Faraday’s First Law of Electromagnetic Induction:-

• The discovery and understanding of electromagnetic induction are based on a long series of experiments carried out by Faraday and Henry. From the experimental observations, Faraday arrived at a conclusion that an emf is induced in the coil when the magnetic flux across the coil changes with time. With this in mind, Faraday formulated his first law of electromagnetic induction as,

• The discovery and understanding of electromagnetic induction are based on a long series of experiments carried out by Faraday and Henry. From the experimental observations, Faraday arrived at a conclusion that an emf is induced in the coil when the magnetic flux across the coil changes with time. With this in mind, Faraday formulated his first law of electromagnetic induction as,Whenever a conductor is placed in a varying magnetic field, an electromotive force is induced. If the conductor circuit is closed, a current is induced which is called induced current.

Faraday's LawMagnetic field intensity in a closed loop

Mentioned here are a few ways to change the magnetic field intensity in a closed loop:-

• By rotating the coil relative to the magnet.
• By moving the coil into or out of the magnetic field.
• By changing the area of a coil placed in the magnetic field.
• By moving a magnet towards or away from the coil.

Faraday’s second law of electromagnetic induction states that:-

• The induced emf in a coil is equal to the rate of change of flux linkage.

• The induced emf in a coil is equal to the rate of change of flux linkage.The flux is the product of the number of turns in the coil and the flux associated with the coil. The formula of Faraday’s law is given below:

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ε=−NΔϕΔt

• Where,ε is the electromotive force
• Φ is the magnetic flux
• N is the number of turns

The negative sign indicates that the direction of the induced emf and change in the direction of magnetic fields have opposite signs.

Additionally, there is another key law known as Lenz’s law that describes electromagnetic induction as well.

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