Question

what faraday second law and induced formula​

Answer 1

Answer:

Read it carefully

Explanation:

It states that the magnitude of emf induced in the coil is equal to the rate of change of flux that linkages with the coil. The flux linkage of the coil is the product of the number of turns in the coil and flux associated with the coil.

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Formula :

Consider, a magnet is approaching towards a coil. Here we consider two instants at time T1 and time T2.

Flux linkage with the coil at time,

Flux linkage with the coil at time,

Change in flux linkage,

Let this change in flux linkage be,

So, the Change in flux linkage

Now the rate of change of flux linkage

Take derivative on right-hand side we will get

The rate of change of flux linkage

 

But according to Faraday’s law of electromagnetic induction, the rate of change of flux linkage is equal to induced emf.

 

Considering Lenz’s Law.

Where:

Flux Φ in Wb = B.A

B = magnetic field strength

A = area of the coil

Hope u will get it friend!