ELECTROMAGNETISM PROBLEMS

ELECTROMAGNETISM PROBLEMS - ELECTROMAGNETISM PROBLEMS...

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ELECTROMAGNETISM PROBLEMS Physics 201 -1- 1. The figure below shows 3 bar magnets of equal sizes and equal strengths. At which of the points labeled A to E is the magnetic field approximately equal to zero? (Points B and C are at equal distances from the magnets.) A. A B. B C. C D. D E. E 2. The magnetic permeability of a ferromagnetic material is Use the following information in the next two questions A wire carries a current I which is traveling up the page. Point P lies off to the right. 3. What is the direction of the magnetic field at point P? 4. Which direction are electrons traveling in the wire?
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-2- 5. A proton is traveling to the right and encounters a region R which contains an electric field or a magnetic field. The proton is observed to speed up. Which is the best conclusion about the region R? A. There is a magnetic field pointing up the page. B. There is a magnetic field pointing down the page. C. There is an electric field pointing to the right. D. There is an electric field pointing to the left. 6. A proton is traveling to the right and encounters a region S which contains an electric field or a magnetic field. The proton is observed to bend up the page. Refer to the following possibilities: I. There is a magnetic field pointing into the page. II. There is a magnetic field pointing out of the page. III. There is an electric field pointing up the page. IV. There is an electric field pointing down the page. Which is the best conclusion about the region S?
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-3- 7. Three particles travel through a region of space where the magnetic field is out of the page, as shown in the figure above. The particle following path 1 must have: A. a positive charge B. a negative charge. C. no charge Use the following information in the next two questions A beam of electrons is traveling to the right. Point A is above the beam, as shown. 8. What is the direction of the electric field at point A? 9. What is the direction of the magnetic field at point A?
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