1) An electron is traveling in the-x direction near a current-carrying wire as shown. The wire carries current in the +z direction (out of the page). +y i. What is the direction of the magnetic field caused by the wire at the charge's location? A. +x (right) B. -x (left) C. -y (down) D. +y (up) E. The magnetic field is zero ii. In which direction is force caused by the wire on the electron? A. -z (into the page) B. +z (out of the page) C. +y (up) D. -y (down) E. The force is zero 3 mm 1300 m/s 3 A +X

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter22: Magnetic Forces And Magnetic Fields
Section: Chapter Questions
Problem 7OQ
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1) An electron is traveling in the -x direction near a current-carrying wire as shown. The wire
carries current in the +z direction (out of the page).
+y
i. What is the direction of the magnetic field caused by the
wire at the charge's location?
A. +x (right)
B.
C.
D.
E.
-x (left)
-y (down)
+y (up)
The magnetic field is zero
ii. In which direction is force caused by the wire on the
electron?
A. -z (into the page)
B. +z (out of the page)
C. +y (up)
D. -y (down)
E. The force is zero
i. The magnitude of the magnetic field caused by the 4A current at the
location of the 2A current is
A. 0
B. 2.7E-4T
C. 1.3E-4 T
D. 83 T
E. 170 T
ii. The direction of the force exerted by the 4A current on a one meter
long segment of the 2A current is
A. -z (into the page)
B. +z (out of the page)
3 mm
C. +x (right)
D. -x (left)
E. The force is zero
1300 m/s
2) A 4 amp current flows in the +y direction 3mm away from a 2 amp current which also flows in
the +y direction as shown.
3 A
2 A
4 A
+X
3 mm
Transcribed Image Text:1) An electron is traveling in the -x direction near a current-carrying wire as shown. The wire carries current in the +z direction (out of the page). +y i. What is the direction of the magnetic field caused by the wire at the charge's location? A. +x (right) B. C. D. E. -x (left) -y (down) +y (up) The magnetic field is zero ii. In which direction is force caused by the wire on the electron? A. -z (into the page) B. +z (out of the page) C. +y (up) D. -y (down) E. The force is zero i. The magnitude of the magnetic field caused by the 4A current at the location of the 2A current is A. 0 B. 2.7E-4T C. 1.3E-4 T D. 83 T E. 170 T ii. The direction of the force exerted by the 4A current on a one meter long segment of the 2A current is A. -z (into the page) B. +z (out of the page) 3 mm C. +x (right) D. -x (left) E. The force is zero 1300 m/s 2) A 4 amp current flows in the +y direction 3mm away from a 2 amp current which also flows in the +y direction as shown. 3 A 2 A 4 A +X 3 mm
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