The current through a 60 mH inductor is given by the equation I = 15 sin 377t. Determine the induced emf. a) 900 sin 337t b) 900 cos 377t c) 339.3 cos 377t d) 339.3 sin 377t

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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.