Compare the average thermal velocity of an electron, v_th, at room temperature, if 1/2mv^2_th= 1/2kT, where m is the electron mass, k is Boltzmann’s constant, and T is the absolute temperature, with the drift velocity of an electron having a mobility of 10^3 cm^2/V-s in an electric field of 1000 V/cm. The drift velocity equals the product of the mobility and the electric field. At what electric field strength will the drift velocity equal the thermal velocity?

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