Subject: Physics
1. State Faraday's law of electromagnetic induction
in Faraday's law of
Answers
Faraday's law of electromagnetic induction:
When a changing magnetic field is linked with a coil, an emf is induced in it. This change in magnetic field may be caused by changing the magnetic field strength by moving a magnet towards or away from the coil, or moving the coil into or out of the magnetic field as desired. Or in simple words, we can say that the magnitude of the emf induced in the circuit is proportional to the rate of change of flux.
The Faraday's law of electromagnetic induction says that
the E.M.F. induced in a coil 'e' =− (rate of change of magnetic flux linkage)
where,
the Flux linkage = number of turns 'N' times magnetic field 'B' × area 'A' ×cosθ
where,
θ is the angle between magnetic field B and area A.
θ at any instant
′
t
′
=(angular velocity 'w')× (time instant 't').
That is, θ =w×t.
E.M.F. induced in a coil 'e'=N×B×A×w×sinw×t.
Answer:
This phenomenon is known as electromagnetic induction. Faraday's law states that a current will be induced in a conductor which is exposed to a changing magnetic field. ... During Faraday's experiment, he discovered how EMF is induced in a coil when the flux passing through the coil changes
Explanation:
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