What is the Induced Current in a Time-Varying Magnetic Field?

In summary, changing magnetic flux is the rate of change of magnetic field over a given area, measured with a fluxmeter in units of webers. It can be caused by a changing magnetic field or area, and is governed by Faraday's Law of Induction. In everyday life, changing magnetic flux is utilized in generators, electric motors, transformers, and various technologies such as MRI machines, speakers, and hard drives.
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Havoc0040
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1. A current loop with a resistance R = 522 and an area A = 0.28 m2 is oriented perpendicular to a magnetic field that varies in time as sketched in the figure. What is the current induced in the loop at t = 0.30 s
http://s1191.photobucket.com/albums/z462/havoc0040/?action=view&current=21prob04.jpg



2.(Hint: You can express the magnetic field in the form B=B0sin(2 f*t).)



3. I get getting the answer of 8.42e-4
 
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1. What is changing magnetic flux?

Changing magnetic flux refers to the rate of change of magnetic field over a given area. It is a measure of the amount of magnetic field passing through a surface as it changes over time.

2. How is changing magnetic flux measured?

Changing magnetic flux is measured using a device called a fluxmeter, which measures the strength of the magnetic field passing through a given area. The unit of measurement for changing magnetic flux is the weber (Wb).

3. What causes changing magnetic flux?

Changing magnetic flux is caused by either a changing magnetic field or a changing area. When the magnetic field strength or the area changes, the magnetic flux also changes.

4. What is Faraday's Law of Induction?

Faraday's Law of Induction states that a changing magnetic flux through a loop of wire will induce an electromotive force (EMF) in the wire, which can cause an electric current to flow.

5. How is changing magnetic flux used in everyday life?

Changing magnetic flux is used in a variety of everyday applications, such as generators, electric motors, and transformers. It is also used in technologies like MRI machines, speakers, and hard drives.

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