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Find the mobility of the electrons when the drift velocity is 23 units and the electric field is 11 units.

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Find the mobility of the electrons when the drift velocity is 23 units and the electric field is 11 units.

(a) 1.1

(b) 2.2

(c) 3.2

(d) 0.9

The question was asked in semester exam.

Question is from Continuity Equation in chapter Electric Fields in Material Space of Electromagnetic Theory

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The correct choice is (b) 2.2

For explanation: The mobility is defined as the drift velocity per unit electric field. Thus μe = vd/E = 23/11 = 2.1 units.

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