Question

electromagnetic induction by using two coils ​

Answer 1

Answer:

Mutual inductance

Mutual inductancePicture two coils next to each other, end to end. If the first coil has a current going through it,a magnetic field will be produced, and a magnetic flux will pass through the second coil. Changing the current in the first coil changes the flux through the second, inducing an emf in the second coil.

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Answer 2

Answer:

Faraday's law tells us that a changing magnetic flux will induce an emf in a coil. The induced emf for a coil with N loops is: Picture two coils next to each other, end to end. If the first coil has a current going through it,a magnetic field will be produced, and a magnetic flux will pass through the second