An infinite solenoid with radius b = 8.5 cm has n = 800 turns per unit length. The current varies in time according to I(t) = Iocos(2t), with direction as defined in the drawing. A ring with radius r = b/2 and resistance R = 1 is centered on the solenoid's axis, with its plane perpendicular to the axis. Positive I a. The induced current in the ring at t = 1/2 is Iind = Alo. Find the value of A. b. A given little piece of the ring will feel a magnetic force. What is the smallest value of t for which this force maximal? c. What is the effect of the force on the ring? That is, does the force cause the ring to (1) translate up/down, (2) translate left/right. (3) spin, (4) flip over, (5) stretch/shrink? Input the correct number:
An infinite solenoid with radius b = 8.5 cm has n = 800 turns per unit length. The current varies in time according to I(t) = Iocos(2t), with direction as defined in the drawing. A ring with radius r = b/2 and resistance R = 1 is centered on the solenoid's axis, with its plane perpendicular to the axis. Positive I a. The induced current in the ring at t = 1/2 is Iind = Alo. Find the value of A. b. A given little piece of the ring will feel a magnetic force. What is the smallest value of t for which this force maximal? c. What is the effect of the force on the ring? That is, does the force cause the ring to (1) translate up/down, (2) translate left/right. (3) spin, (4) flip over, (5) stretch/shrink? Input the correct number:
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Transcribed Image Text:An infinite solenoid with radius b = 8.5 cm has n = 800 turns per unit length. The current varies in
time according to I(t) = Iocos(2t), with direction as defined in the drawing.
A ring with radius r = b/2 and resistance R = 1 is centered on the solenoid's axis, with its plane
perpendicular to the axis.
Positive I
a. The induced current in the ring at t = 1/2 is Iind = Alo. Find the value of A.
b. A given little piece of the ring will feel a magnetic force. What is the smallest value of t for which
this force maximal?
c. What is the effect of the force on the ring? That is, does the force cause the ring to (1) translate
up/down, (2) translate left/right. (3) spin, (4) flip over, (5) stretch/shrink? Input the correct number:
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