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Unformatted text preview: law (vl3748) Magnetism mostarshed (338) 1 This print-out should have 28 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points The figure represents two long, straight, par- allel wires extending in a direction perpendic- ular to the page. The current in the left wire runs into the page and the current in the right runs out of the page. a b c What is the direction of the magnetic field created by these wires at location a, b and c? (b is midway between the wires.) 1. up, zero, down 2. up, down, up 3. down, zero, up 4. down, down, up 5. down, up, down 6. up, up, down 002 10.0 points A current is flowing clockwise around a loop placed on your desk. What would be the direction of the result- ing magnetic field inside the loop? 1. upward 2. no magnetic field was generated. 3. clockwise 4. downward 5. counterclockwise 003 10.0 points If all atoms have electrons that are in mo- tion about an atom, why arent all materials magnetic? 1. Random motion of electrons does not create magnetic fields. 2. The net magnetic field created by ordi- nary materials is zero. 3. Ordinary materials do not create mag- netic fields. 004 10.0 points What surrounds a stationary electric charge? What surrounds a moving electric charge? (Ignore the gravitational field.) 1. electric fields for both 2. magnetic fields for both 3. electric field; magnetic field 4. electric field; electric and magnetic fields 5. It cannot be predicted. 6. magnetic field; electric field 005 10.0 points An electron always experiences a force in an electric field, but not always in a magnetic field. Defend this statement....
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This note was uploaded on 04/18/2010 for the course PHYS 0304 taught by Professor Mr.donnis during the Spring '10 term at Amarillo College.
- Spring '10