A strip of doped silicon 315 microm wide contains 90 1022, Ask an Expert

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A strip of doped silicon 315 µm wide contains 9.0 1022 conduction electrons per cubic meter and an insignificant number of holes. When the strip carries a current of 110 µA, the drift speed of the electrons is 44 cm/s. What is the thickness of the strip? in µm

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