Current Electricity - Result Question 3

4. A charged particle having drift velocity of 7.5×104ms1 in an electric field of 3×1010 Vm1, has a mobility in m2V1s1 of: [2020]

(a) 2.5×106

(b) 2.5×106

(c) 2.25×1015

(d) 2.25×1015

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Answer:

Correct Answer: 4. (a)

Solution:

  1. (a) Given,

Drift velocity of charged particle,

Vd=7.5×104m/s

Electric field, E=3×1010Vm1

Mobility, μ=VdE=7.5×1043×1010=2.5×106m2V1s1



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