7. A light circular wire suspended by a thin silk thread in a uniform magnetic field car- ries a current in the direction shown in Fig- ure 20.53. The magnetic field is perpendicu- lar to the plane of the paper, and the wire is held at rest in that plane. If the wire is sud- denly released so that it is free to rotate, A. It will rotate so that point a goes into the X X A FIGURE 20.53 рaper. B. It will rotate so that point a goes out of Multiple-choice the paper. problem 7. C. It will not rotate.

7. A light circular wire suspended by a thin silk thread in a uniform magnetic field car- ries a current in the direction shown in Fig- ure 20.53. The magnetic field is perpendicu- lar to the plane of the paper, and the wire is held at rest in that plane. If the wire is sud- denly released so that it is free to rotate, A. It will rotate so that point a goes into the X X A FIGURE 20.53 рaper. B. It will rotate so that point a goes out of Multiple-choice the paper. problem 7. C. It will not rotate.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter30: Sources Of The Magnetic Field

Section: Chapter Questions

Problem 30.4OQ: Two long, parallel wires each carry the same current I in the same direction (Fig. OQ30.4). Is the...

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