In what circumstances is it possible to have an induced e.m.f. without an inducted current?

Expert Solution

lets start with the definations and some laws:

induced emf : change in the magnetic field around the coil causes a voltage in the coil, this is known as induced emf.

induced current : current get induced due to the exposure magnetic field

Lenz law: When an emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such that it produces a current whose magnetic field opposes the change which produces it. The induced magnetic field inside any loop of wire always acts to keep the magnetic flux in the loop constant ( Ref: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/farlaw.html#c2)

Faraday's Law: it states that ,when the magnetic flux linking a circuit changes, an electromotive force is induced in the circuit proportional to the rate of change of the flux linkage.

Answer : it is possible to have induced emf without any inducted current. While conductor moves inside a magnetic field , rather than changing the magnetic field with respect to steady conductor.

genius_generous answered 2 years ago

A) Under what circumstances might it be possible to reduce inflation without causing a recession? B)...

A) Under what circumstances might it be possible to reduce inflation without causing a recession? B) Explain two ways in which a recession might raise the natural rate of unemployment.

Induced current in a magnet

A bar magnet is held vertically with its upper end a little bit below the center of a horizontal metal ring. The upper end of the magnet is its north pole (see Fig.29.12). The bar magnet is now dropped. An observer views the ring from above its center. To this observer, how will the induced current in the ring behave as the magnet falls?The current will flow counterclockwise and be increasing.The current will flow counterclockwise and be decreasing.The current will...

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In what circumstances is it possible to have an induced e.m.f. without an inducted current?

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