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Question
3.
A uniform magnetic field that we control is present everywhere and points out of the page. Its magnitude changes with time
as shown in the graph. A wire coil with 8 turns, 0.15 m in radius, and with 9.0 2 resistance, is placed flat on the page, so
that the magnetic field points out, perpendicular to the plane of the loop. SHOW YOUR WORK or REASONING for you
answers below!
B(T)
10
I
2.0
4.0
(a) Draw a qualitatively correct graph of the EMF in the loop as a function of time.
05
0
(b) Find the current in the loop at t=1.0 s and at t=3.0 s.
t (s)
6.0
(c) Sketch a few of the induced electric field lines inside and outside the loop at t = 1 second. The dots represent the
magnetic field lines. Make sure you indicate the direction f the field represented by your field lines!
(d) Suppose that instead of a magnetic field, the dots in the figure below and the graph in the above problem represented
a changing electric field pointing out of the page. Sketch a few of the induced magnetic field lines, and again, make
sure you indicate the direction of the field represented by your field lines!
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Transcribed Image Text:3. A uniform magnetic field that we control is present everywhere and points out of the page. Its magnitude changes with time as shown in the graph. A wire coil with 8 turns, 0.15 m in radius, and with 9.0 2 resistance, is placed flat on the page, so that the magnetic field points out, perpendicular to the plane of the loop. SHOW YOUR WORK or REASONING for you answers below! B(T) 10 I 2.0 4.0 (a) Draw a qualitatively correct graph of the EMF in the loop as a function of time. 05 0 (b) Find the current in the loop at t=1.0 s and at t=3.0 s. t (s) 6.0 (c) Sketch a few of the induced electric field lines inside and outside the loop at t = 1 second. The dots represent the magnetic field lines. Make sure you indicate the direction f the field represented by your field lines! (d) Suppose that instead of a magnetic field, the dots in the figure below and the graph in the above problem represented a changing electric field pointing out of the page. Sketch a few of the induced magnetic field lines, and again, make sure you indicate the direction of the field represented by your field lines!
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