Question

5. (Spts.) Both the square loop and the straight wire carry a steady current . Determine the magnitude of the magnetic force on the square loop. iii) F (s + s.) 6. (5 pts.) Three particles travel through a region of space where the magnetic field is out of the page, as shown in the figure What are the signs of the charges of these three particles? i) I is neutral, 2 is negative, and 3 is positive. ii) 1 is neutral, 2 is positive, and 3 is negative i) 1 is positive, 2 is neutral, and 3 is negative. iv) 1 is positive, 2 is negative, and 3 is neutral. v) is negative, 2 is neutral, and 3 is positive. 7. (Spts.) Two solenoids are close to each other, as shown in the figure, with the switch S open. When the switch is suddenly closed, which way will the induced current flow through the galvanometer in the left-hand solenoid? A. into the page B. out of the page C. from left to right D. from right to left E. There will be no induced current through the galvanometer. 8. (5pts.) Alpha particles, each having a charge of +2e and a mass of 6.64 x10-27 kg, are accelerated in a uniform 0.50 T magnetic field to a final orbit radius of 0.50 m. The field is perpendicular to the velocity of the particles. What is the kinetic energy of an alpha particle in the final orbit? (1 MeV- 1.6x 10-1B J) i)3.0 MeV i) 2.6 MeV i)3.4 MeV iv) 3.9 MeV v)4.3 Me PHY 202-A Final Exam

Answer 1

Hi,

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QUESTION #7:

You can use right hand thumb rule to find the direction of the induced magnetic field which in turn gives you the direction of induced current. Since the direction of the induced magnetic field is from right to left, the current flow in the left hand circuit will be from Left to right.

So the correct option is Option C: from Left to right.

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