Page 349 - Schaum's Outline of Theory and Problems of Applied Physics

334 MAGNETISM [CHAP. 27

27.12. 159 A

27.13. 1.26 × 10 −2 T
13
27.14. The magnetic force ev B is more than 10 times greater than the gravitational force mg.
27.15. (a) 0.1 N (b)0

27.16. (a) The direction of the field should be toward the west so that the force on the wire is upward.
(b) 9.8 × 10 −3 T
27.17. 0.125 N; the force is repulsive

27.18. (a) Yes (b)No

27.19. (a) 0.5 A (b)7.54 × 10 −4 T

27.20. (a) 200 A/m; 2.51 × 10 −4 T (b) 200 A/m; 1.2 T
27.21. (a) 0.75 T (b)9.4 × 10 −5 T