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TA: Tomoyuki Nakayama
Friday, July 2, 2010
PHY 2048: Physic 2, Discussion Section 8704
Quiz 5 (Homework Sets #8 & #9)
Name:
UFID:
Formula sheets are not allowed. Calculators are allowed. Do not store equations in your calculator.
You need to show all of your work for full credit.
________________________________________________________________________________
In the figure below right, a long straight wire carries a current
i
1
= 80.0 A and a square loop carries
current
i
2
= 50.0 A. Take
a
= 5.00 cm and
L
= 20.0 cm.
a) What are the magnitude and direction of the force exerted on
the top edge of the loop? What are the magnitude and direction
of the force exerted on the bottom edge? (To show the
directions of the forces, draw arrows in the figure.)
The strength of the magnetic field due to a long straight wire
depends on the perpendicular distance r from the wire and it is
given by B =
μ
0
i/(2
π
r). Therefore, the fields at the top and
bottom edges are, respectively
B
T
=
μ
0
i
1
/(2
π
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This note was uploaded on 12/13/2011 for the course PHY 2049 taught by Professor Any during the Summer '08 term at University of Florida.
 Summer '08
 Any
 Physics, Work

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