practice_test2with ans

# practice_test2with ans - Maxwell guessed that visible light...

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Maxwell guessed that visible light was an electromagnetic wave because of its: a. frequency. b. wavelength. c. speed. d. energy. e. polarization. Ans c The force on a charged particle created by its motion in a magnetic field is maximum at what angle between the particle velocity and field? a. zero b. 180 ° c. 90 ° d. 45 ° e. 135 ° Ans c If a proton is released at the equator and falls toward the Earth under the influence of gravity, the magnetic force on the proton will be toward the: a. north. b. south. c. east. d. west. Ans. C There is a magnetic force on a particle. It is possible that the particle is: a. uncharged. b. stationary. c. moving in the direction of the magnetic field. d. not part of a wire. e. moving opposite the direction of the magnetic field. Ans. D There is a current I flowing in a clockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L , then the net magnetic force acting on the loop is: a. 2ILB. b. ILB. c. IBL2. d. I 2 BL. e. zero. Ans. E

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There is a current I flowing in a clockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L , then the net magnetic torque acting on the loop is: a. 2 ILB . b. I LB . c. I BL 2 . d.
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## This note was uploaded on 04/09/2009 for the course PHYS 1B taught by Professor Briankeating during the Spring '07 term at UCSD.

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practice_test2with ans - Maxwell guessed that visible light...

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