A 20-cm-diameter circular loop of wire is placed in a 0.72-T magnetic field. 1) When the plane of the loop is perpendicular to the field lines, what is the magnetic flux through the loop? 2) The plane of the loop is rotated until it makes a 41 ∘ angle with the field lines. What is the angle in the equation ΦB = BAcosθ for this situation? 3) What is the magnetic flux through the loop at this angle?

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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.