A series RL circuit formed of a R = 1.20-ΩΩ resistor, a L = 11.0 H inductor, and connected to a V = 7.00 V battery. (a) What is the time constant for this circuit? (b) Once the switch is closed, how long (t) does it take the current to reach half its maximum value (Imax/2)? Group of answer choices 9.2 s, 6.38 s 13.1 s, 5.9 s 11.2 s, 7.9 s 2.9 s, 8.33 s

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Q: The time for the current in the resistor of an RL circuit, in units of ms, to reach -63% of its…

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Q: Find the energy stored in a 6.8-mH inductor when the current is 3.7 A.

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Q: For the circuit shown in the figure below, AVmax = 61.0 V, w = 65.0n rad/s, and L = 70.0 mH.…

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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.