3. Germanium is doped with 5 x1015 donor atoms per cm3 at T = 300 K. The dimensions of the Hall device are d 5 x 10-3 cm, W= 2 x 102 cm, and L= 10 cm. The current is I, =250 µA, the applied voltage is Vx= 100 mV, and the magnetic fluxdensity is Bz= 500 gauss= 5 x102 tesla. Calculate: (a) the Hall voltage, (b) the Hall field, and (c) the carrier mobility

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