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QUIZ_4_A - PHYSICS 1B QUIZ#3 FALL QUARTER 2005 A YOUR NAME...

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PHYSICS 1B QUIZ #3 FALL QUARTER 2005 A YOUR NAME _________________________________________________________________ YOUR UCSD STUDENT IDENTIFICATION NUMBER_____________________________ INSTRUCTIONS: THERE ARE 10 QUESTIONS ON THIS QUIZ. PLEASE FILL IN THE SCANTRON FORM USING A NUMBER 2 PENCIL. PUT YOUR NAME AND THE IDENTIFICATION NUMBER YOU WERE ASSIGNED IN THE SPACES ABOVE. 1 page of notes is allowed. NO BOOKS CELL PHONES, LAPTOPS ALLOWED. CALCULATORS ARE OK. 1. A 2.0-m wire segment carrying a current of 0.60 A oriented parallel to a uniform magnetic field of 0.50 T experiences a force of what magnitude? a. 6.7 N b. 0.30 N c. 0.15 N d. zero 2. Two parallel conductors each of 0.50 m length, separated by 5.0 × 10 - 3 m and carrying 3.0 A in opposite directions, will experience what type and magnitude of mutual force? (magnetic permeability in empty space µ 0 = 4 π × 10 - 7 T m/A) a. attractive, 0.06 × 10 - 4 N b. repulsive, 0.60 × 10 - 4 N c. attractive, 1.8 × 10 - 4 N d. repulsive, 1.8 × 10 - 4 N 3. A 100-m-long wire carrying a current of 4.0 A will be accompanied by a magnetic field of what strength at a distance of 0.050 m from the wire? (magnetic permeability in empty space
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