A series RL circuit with L = 3.80 H and a series RC circuit with C = 2.20 μF have equal time constants. The two circuits contain the same resistance R. (a) What is the value of R? ΚΩ (b) What is the time constant? ms

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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.