Ch21 - 20.1a What is the direction of the magnetic force on...

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Unformatted text preview: 20.1a What is the direction of the magnetic force on the proton? 1) +x 2) –x 3) +y 4) –y 5) +z 6) –z 7) zero magnitude 20.1b An electron is traveling in the –y direction. At its location there is a magnetic field in the –z direction. What is the direction of the magnetic force on the electron? 1) +x 2) –x 3) +y 4) –y 5) +z 6) –z 7) zero magnitude 20.1c A proton traveling in the –x direction experiences a magnetic force in the – z direction. What is a possible direction of the magnetic field at the location of the proton? 1) +x 2) –x 3) +y 4) –y 5) +z 6) –z 7) zero magnitude 20.1d A proton moving in the +y direction experiences a magnetic force in the –x direction. What is the direction of conventional current in the wire? 1) +y 2) –y 3) I = 0 4) Not enough information 20.2a Direction of magnetic force on wire? 1) +x 2) –x 3) +y 4) –y 5) +z 6) –z 7) zero magnitude 20.3a Forces on the moving POSITIVE charge: F elec F mag 1 UP UP 2 DOWN DOWN 3 UP DOWN 4 DOWN UP 20.3b Forces on the moving NEGATIVE charge: F elec F mag 1 UP UP 2 DOWN DOWN 3 UP DOWN 4 DOWN UP 20.3c Particle of charge +q travels in a straight line at constant speed. Which is true?...
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Ch21 - 20.1a What is the direction of the magnetic force on...

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