A 12.0 V battery is connected into a series circuit containing a 16.0 ohms resistor and a 1.90 H inductor. A) in what time interval (in s) will the current reach 50% of its value? B) in what time interval (in s) will the current reach 90% of its final value? What if? After a very long time using a switch like that shown in the figure the battery is removed and the inductor is connected directly across from the resistor. C) in what time interval (in s) will the current decrease to 50.0% of its initial value? D) in what time interval (ins) will the current decrease to 10.0% of its initial value?

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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.