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Unformatted text preview: 1. 3/3 points | 2/4 submissions Last Response | Show Details All Responses Notes A proton moves at constant velocity in the +y direction, through a region in which there is an electric field and a magnetic field. The electric field is in the +x direction, and has magnitude 200 V/m. The magnetic field is in the -z direction, and has magnitude 0.95 T. What is the magnitude of the net force on the proton? F net = 0 N What is the speed of the proton? v = 210.5263158 211 m/s 2. [MI02 20.RQ.05.alt01.] 6/6 points | 3/4 submissions Last Response | Show Details A copper wire with square cross section carries a conventional current I in the -y direction. There is a magnetic field B in the +x direction. Draw a diagram illustrating the situation, to help you answer the following questions. What is the direction of E parallel , the electric field that causes the current to flow?-y-y What is the direction of the drift velocity of the mobile electrons? +y +y What is the direction of the magnetic force on the moving electrons? +z +z What is the direction of E transverse , the electric field due to the Hall effect, inside the wire? +z +z If the mobile charges had been positive (holes) instead of negative, what would have been the direction of the magnetic force on the moving positive charges? +z +z If the mobile charges had been positive instead of negative, what would have been the direction of the transverse electric field?...
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- Spring '08