# Electrons in electromagnetic induction

• scientifico
In summary, electromagnetic induction is a phenomenon where a changing magnetic field induces an electric current in a conductor. Electrons play a crucial role in this process as they are the charged particles that make up the electric current. The relationship between electrons and magnetic fields is that a changing magnetic field creates an electric field, which causes the electrons to move and create an electric current. This process can only occur with the movement of electrons. Some practical applications of electromagnetic induction include electric generators, transformers, induction cooktops, wireless charging technology, and medical devices like MRI machines.
scientifico
Hello, when a coil rotates in a magnetic field an AC is produced at the ends of the coil but do that electrons come from the coil wire ?
If yes, shouldn't the coil run out of electrons after some time ?

thank you

If you want to use that AC, you always connect both ends. Electrons flow in at one end and exit at the other, and back again when voltage and current change their sign. The total number of electrons is always (nearly) constant.

## 1. What is electromagnetic induction?

Electromagnetic induction is a phenomenon where a changing magnetic field induces an electric current in a conductor.

## 2. How do electrons play a role in electromagnetic induction?

Electrons are the charged particles that make up an electric current. In electromagnetic induction, the changing magnetic field causes the electrons in a conductor to move, creating an electric current.

## 3. What is the relationship between electrons and magnetic fields in electromagnetic induction?

In electromagnetic induction, a changing magnetic field creates an electric field, which in turn causes the electrons in a conductor to move, creating an electric current.

## 4. Can electromagnetic induction only occur with moving electrons?

Yes, electromagnetic induction requires the movement of electrons in a conductor. If there is no movement of electrons, there will be no induced electric current.

## 5. What are some practical applications of electromagnetic induction?

Electromagnetic induction is used in many everyday devices, such as electric generators, transformers, and induction cooktops. It is also used in wireless charging technology and in medical devices like MRI machines.

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