In the figure, a steady current is flowing through a very long straight wire. A square loop of wire is placed just below it. Which of the followings will produce an induced current in the square loop? a) Move the loop away from the wire  b) Move the loop parallel to the wire c) Incrase the cuurent electric current d) Replacing the steady current with an AC current

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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.