Problem 19: A 4600-pF capacitor is charged to 95 V and then quickly connected to an inductor with 83-mH inductance. Part (a) Find the maximum energy, in joules, stored in the magnetic field of the inductor. Umax = ______ Part (b) Find the peak value of the current, in amperes. Imax = ______ Part (c) Find the circuit’s oscillation frequency, in hertz. f = ______

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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.