A 58.5 m length of insulated copper wire is wound to form a solenoid of radius 2.3 cm. The copper wire has a radius of 0.52 mm. (Assume the resistivity of copper is p = 1.7 × 10–8 n · m.) (a) What is the resistance of the wire? 1.17 Ω (b) Treating each turn of the solenoid as a circle, how many turns can be made with the wire? 404.81 turns (c) How long is the resulting solenoid? 0.421 m (d) What is the self-inductance of the solenoid? 0.809 mH le) TE t he cele neid is

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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.