Electromagnetic induction (production of emf)

Thread starter delsoo
Start date Apr 28, 2014
Tags

Electromagnetic Electromagnetic induction Emf Induction

In summary, electromagnetic induction is the process of generating an electromotive force (emf) in a circuit by varying the magnetic field passing through it. This is achieved through changes in magnetic flux, which induces a current in a conductor. Faraday's law of electromagnetic induction states that the magnitude of the induced emf is proportional to the rate of change of the magnetic flux. Real-world applications of electromagnetic induction include generators, transformers, electric motors, and household appliances. This phenomenon is closely related to self-inductance, which is the ability of a circuit to generate an emf in itself when the current passing through it changes.

Apr 28, 2014

delsoo

Homework Statement

the ans is C for this question. i really have no idea , van someone explain please?

Homework Equations

The Attempt at a Solution

Physics news on Phys.org

Apr 28, 2014

BvU

Science Advisor

Homework Helper

Not good enough. Read the guidelines.

Helping you at this point isn't allowed according to PF rules.

Related to Electromagnetic induction (production of emf)

1. What is electromagnetic induction?

Electromagnetic induction is the process of generating an electromotive force (emf) in a circuit by varying the magnetic field that passes through the circuit.

2. How is emf produced through electromagnetic induction?

Emf is produced when there is a change in the magnetic flux passing through a conductor, such as a wire. This change in flux induces a current in the conductor, generating an emf.

3. What is Faraday's law of electromagnetic induction?

Faraday's law states that the magnitude of the induced emf is proportional to the rate of change of the magnetic flux passing through a conductor. It is given by the equation: emf = -N(dΦ/dt), where N is the number of turns in the conductor and dΦ/dt is the rate of change of magnetic flux.

4. What are some real-world applications of electromagnetic induction?

Some common applications of electromagnetic induction include generators, transformers, electric motors, and various household appliances such as refrigerators and washing machines.

5. How is electromagnetic induction related to the concept of self-inductance?

Self-inductance is the ability of a circuit to generate an emf in itself when the current passing through it changes. This phenomenon is closely related to electromagnetic induction, as both involve the production of emf through changes in magnetic flux.