1ba-quiz4 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A current flowing along the x-axis produces a magnetic field at a point on the y-axis at y=30mm that is equal to -0.40 m T (note: negative means that the field points downward into the x-y plane). The current and its sense along the x-axis are closest to: A) 60 mA, negative B) 60 mA, positive C) 90 mA, positive D) 120 mA, positive E) 120 mA, negative 2) A charged particle of mass 0.0090 g is subjected to a 5.0-T magnetic field which acts at a right angle to its motion. If the particle moves in a circle of radius 0.20 m at a speed of 4.0 m/s, what is the magnitude of the charge on the particle? A) 28 C B) 0.0018 C C) 560 C D) 0.036 C 3) Which of the following is an accurate statement? A) A current carrying loop of wire tends to line up with its plane parallel to an external magnetic field in which it is positioned. B) The magnetic force on a moving charge does not change its energy.
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This note was uploaded on 03/22/2009 for the course PHYS PHYS 1B taught by Professor Berman during the Spring '09 term at UCSD.

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1ba-quiz4 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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