Figure E27.49 shows a portion of a silver ribbon with z 1 = 11.8 mm and y 1 = 0.23 mm, carrying a current of 120 A in the + x -direction. The ribbon lies in a uniform magnetic Field, in the y -direction, with magnitude 0.95 T. Apply the simplified model of the Hall effect presented in Section 27.9. If there are 5.85 × 10 28 free electrons per cubic meter, find (a) the magnitude of the drift velocity of the electrons in the x -direction; (b) the magnitude and direction of the electric field in the z -direction due to the Hall effect; (c) the Hall emf. Figure E27.49
Figure E27.49 shows a portion of a silver ribbon with z 1 = 11.8 mm and y 1 = 0.23 mm, carrying a current of 120 A in the + x -direction. The ribbon lies in a uniform magnetic Field, in the y -direction, with magnitude 0.95 T. Apply the simplified model of the Hall effect presented in Section 27.9. If there are 5.85 × 10 28 free electrons per cubic meter, find (a) the magnitude of the drift velocity of the electrons in the x -direction; (b) the magnitude and direction of the electric field in the z -direction due to the Hall effect; (c) the Hall emf. Figure E27.49
Figure E27.49 shows a portion of a silver ribbon with z1 = 11.8 mm and y1 = 0.23 mm, carrying a current of 120 A in the +x-direction. The ribbon lies in a uniform magnetic Field, in the y-direction, with magnitude 0.95 T. Apply the simplified model of the Hall effect presented in Section 27.9. If there are 5.85 × 1028 free electrons per cubic meter, find (a) the magnitude of the drift velocity of the electrons in the x-direction; (b) the magnitude and direction of the electric field in the z-direction due to the Hall effect; (c) the Hall emf.
A proton enters a region of uniform magnetic feild (B) = (0.020 I)T and a uniform electric feild E . When the velocity of the proton is (3000k) m/s, it experiences an acceleration of (9.6x10^9 j) m/s². The magnitude E of the electric feild is equal to what? The options below have units V/m.
a. 160 V/m
b. 100 V/m
c. 60 V/m
d. 40 V/m
e. 0
A charged particle is introduced into a uniform magnetic field Bz = 0.5 mTesla with an initial velocity vx = 1 x 106 m/s. It’s subsequent trajectory describes a circle with radius r = 2.4 cm.
What is the specific charge q/m of this particle in terms of e/m = 1.67 x 1011C/kg?
Select one:
a. 3e/m
b. e/2m
c. e/3m
d. 2e/m
27.24 A beam of protons travelling at 1.20 km/s enters a uniform magnetic field, traveling perpendicular to the field. The beam exists the magnetic field, leaving the field in a direction perpendicular to its original direction (Fig. E27.24). The beam travels a distance of 1.18 cm while in the field. What is the magnitude of the magnetic field?
Chapter 27 Solutions
Mastering Physics with Pearson eText -- Standalone Access Card -- for University Physics with Modern Physics (14th Edition)
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