1. You need to produce a solenoid that has an inductance of 2.61 ?H . You constr
ID: 2092111 • Letter: 1
Question
1. You need to produce a solenoid that has an inductance of 2.61 ?H . You construct the solenoid by uniformly winding 1.11 m of thin wire around a tube. How long, in centimeters, should the tube be? 2. A series RL circuit includes a 3.05-V battery, a resistance of R = 0.455 ?, and an inductance of L = 2.17 H. What is the induced emf 1.08 s after the circuit has been closed? 3. A 129-turn circular coil of radius 2.19 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. During 0.147 s the magnetic field strength increases from 58.9 mT to 96.7 mT. Find the magnitude of the average EMF, in millivolts, that is induced in the coil during this time interval.Explanation / Answer
average emf induced=delta(?)/delta(t)=
B*delta(A)/delta(t)=
0.0378*(pi*0.0219^2 - 0.01)/0.20=
0.0016 V=1.6 mV
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