Physics for Scientists and Engineers, Vol. 1
Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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Chapter 38, Problem 55P
To determine

The type of semiconductor type and the concentration of charge carriers.

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A Hall probe serves to measure magnetic field strength. One such probe consists of a poor conductor 0.135 mm thick, whose charge‑carrier density is 1.01×1025 m−3. When a 1.97 A current flows through the probe, the Hall voltage is measured to be 4.29 mV. The elementary charge ?=1.602×10−19 C. What is the magnetic field strength ??
A cylinder with a(n) 1.6 cm radius and a length of 3.9 m is tightly wrapped with 4000 turns of wire. The current in the wire is decaying according to I = Io eat, with Io = 1.1 A and a = 4.3s-¹. What is the electric field at a point 5.9 cm radially from the axis of the cylinder at t = 0.581395 s? Answer in units of V/m. A coil of 320 turns and radius 9.5 cm is con- centric with and in the central plane of the cylinder. How much power is being dissipated at t = 0.348837 s in a 80 2 resistor connected across the ends of the coil? Answer in units of W.
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