20) S R2 An inductor with inductance L = 0.5 H and negligible resistance is connected to a battery, a switch S, and two resistors, R1 = 5 0 and R2 = 100 as seen in Figure. The battery has emf 160 V and negligible intemal resistance. Sis closed at t = 0. What is the value of t for which iz has half of the final value that it can obtain after switch S has been closed for a long time? A) 17.3 ms B) 13.8 ms C) 46.2 ms D) 9.24 ms E) 34.6 ms ww eese

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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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20)
S
i
iz R23
L
An inductor with inductance L = 0.5 H and negligible resistance is connected
to a battery, a switch S, and two resistors, R1 = 5 0 and R2 = 10 0 as seen in
Figure. The battery has emf 160 V and negligible internal resistance. Sis closed
at t = 0. What is the value of t for which iz has half of the final value that it can
obtain after switch S has been closed for a long time?
A) 17.3 ms B) 13.8 ms C) 46.2 ms D) 9.24 ms E) 34.6 ms
eese
Transcribed Image Text:20) S i iz R23 L An inductor with inductance L = 0.5 H and negligible resistance is connected to a battery, a switch S, and two resistors, R1 = 5 0 and R2 = 10 0 as seen in Figure. The battery has emf 160 V and negligible internal resistance. Sis closed at t = 0. What is the value of t for which iz has half of the final value that it can obtain after switch S has been closed for a long time? A) 17.3 ms B) 13.8 ms C) 46.2 ms D) 9.24 ms E) 34.6 ms eese
19)
A
y
Io
R/4
A solid infinitely long conducting cylinder of radius R = 50 cm has a cylinder
of radius R/4 gouged out of it as in Figure. The conductor carries a current
I, = 200 A uniformly over its cr oss section which is directed out of the page.
What is the magnetic field at point A at a distance R from the center?
(Ho = 4nx10-7T.m/A).
A) BA
-10.2 î + 0.32 ĵ (µT')
=
B) BA = -81.92 î + 2.56 ĵ (µT)
C) BA = -25.6 î + 0.80 ĵ (µT)
D) BA = -85.3 î + 26.6 ĵ (µT)
E) B = -122.88 î + 3.84 ĵ (µT)
Transcribed Image Text:19) A y Io R/4 A solid infinitely long conducting cylinder of radius R = 50 cm has a cylinder of radius R/4 gouged out of it as in Figure. The conductor carries a current I, = 200 A uniformly over its cr oss section which is directed out of the page. What is the magnetic field at point A at a distance R from the center? (Ho = 4nx10-7T.m/A). A) BA -10.2 î + 0.32 ĵ (µT') = B) BA = -81.92 î + 2.56 ĵ (µT) C) BA = -25.6 î + 0.80 ĵ (µT) D) BA = -85.3 î + 26.6 ĵ (µT) E) B = -122.88 î + 3.84 ĵ (µT)
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