A 2.30 H inductor carries a steady current of 0.490 A. When the switch in the circuit is thrown open, the current is effectively zero in 10.0 ms. What is the average induced emf in the inductor during this time? Additional Materials
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- Which of the following statements are true? Choose all that apply. A changing magnetic field will always induce a voltage. As current through an inductor decreases, the inductance remains constant. For an LR circuit, as R increases, & decreases. Transformers can simultaneously decrease voltage & decrease current. Generators transform electrical energy (electricity) into kinetic energy. The mks units for inductance are Wb.C1. inductor is composed of 1000 loops and has length 0.05 m ane radius 0.01 m. The resistance of the resistor is 10 and the voltage of the battery is 12 V. The switch is closed at -0 Assume that all of the circuit's resistance is included in Rand that Consider the simple circuit shown to the right. The all of the circuit's inductance is included in L. (a) What is the inductance of the solenoid? (b) What is the current through the resistor when the switch has been closed for 0.0005 s? wWwWhen the current in a solenoid uniformly increases from 3.0 A to 8.0 A in a time 0.25 s, the induced EMF is 0.50 volts. What is the inductance of the solenoid? a. 25 mH b. 40 mH c. 30 mH d. 35 mH e. 20 mH