Задача id17089

The resistivity of indium arsenide is 2.5·103 Ohm-m, the Hall constant is 10-2 m3/C. Assuming that conduction is carried out by charges of the same sign, determine their concentration and mobility. Compare with problem 31.3. 31.3. The copper plate has the dimensions shown in Fig. 31.3. When there is a longitudinal potential difference dfi, current flows through the conductor. If, without turning off the current, a magnetic field with induction B is created perpendicular to the plate, then a Hall potential difference dfi_H appears between the lower and upper bases. Find the concentration of free electrons in copper and their mobility, if l=60 mm, b=20 mm, d=1 .0 mm, dfi==0.51 mV, dfi_H=55 nV, i=10 A, V=0.1 T.

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