A rectangular coil with resistance R has N turns, each of length I, and width w as shown in Figure. The coil moves into a uniform magnetic field B with constant velocity v. What are the magnitude and direction of the induced current on the coil as it enters the magnetic field? Option1 NBwv/R Option2 Option5 Blwv/R counterclockwise clockwise clockwise counterclockwise clockwise Option3 Option4 Blv/R NBlv/R NBlwv/R

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Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.