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Ph~sics
Sr.-ing 2013
2220
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Discussion TA:
1
Exam 2
Unid: _ _ _ _ _ _ _ _ _ _ _ _ _ __ -------------
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.John [)cFOI'd
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Exam 2
Unid: ________________________
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The circuit shown consists of two resistors, R] and R2 and two capacitors, C] and C2•
They are connected to battery. The switch is initially open with no charge on the
capacitors. The switch is then closed.
(a)
(b) [10 pts.] Detennine the charge on capacitor C] as a function oftime.
[10 pts.] Detennine the charge on capacitor C2 as a function oftime.
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2220
.John UeFonl
Spl'ing 2013
3
Name: - - - - Unid: _ _ _ _ _ _ _ _ _ _ _ _ __ Exam 2
Discussion TA: - ­
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A proton, moving in the plane of the page has a kinetic energy of 6.00 MeV. A magnetic field
of B = 1.00 T is directed into the page. The proton enters the magnetic field with its velocity'
vector at angle a= 45.0° to the linear boundary ofthe field as shown.
(a)
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[10 pts.} Find x, the distance from the point of entry to where the proton will leave the
field.
(b)
[10 pts.] Calculate the angle at which the proton leaves the field.
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Ph~'sics
Name:
2220
Spring 2013
-------------------------
Unid: _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
.John DeFot'd
4
Exam 2
Discussion TA: ________________
Show all work!
[20 pIS.] An infinitely long. straight wire carries a current II and is partially surrounded by a loop of
length L and radius R carrying a current 12 • The axis ofthe loop coincides with the wire. Calculate
the mawetic force exerted on the loop.
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Discussion TA:
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Exam 2 ---------------------
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diameter a through the entire length as shown in the end view. A current I is directed out ofthe page and is uniform through a cross section of the r
conducting materiaL
(a) (b) [10 pts.] Find the magnitude and direction of the magnetic field in
terms of Ilo, I, r and a at point Pl'
[10 pts.] Find the magnitude and direction of the magnetic field in
terms of Ilo, I, r and a at point P2• F; v'\d. ,I\~ C-trrt...A:,;:
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