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NEET 2020 (Phase 1) · Electric Current, Drift Velocity & Current Density

Electric Current, Drift Velocity & Current Density question from NEET 2020 (Phase 1)

Q26NEET 2020 · PHASE 1Easy

Electric Current, Drift Velocity & Current Density

A charged particle having drift velocity 7.5 $\times$ 10-4 ms-1 in an electric field of 3 $\times$ 10-10 Vm-1 has a mobility in m2 V-1s-1 of:

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Answer: (a)

Mobility $\mu = \dfrac{v_d}{E}$
$\mu = \dfrac{7.5 \times 10^{-4}}{3 \times 10^{-10}} = 2.5 \times 10^{6}\text{ m}^{2}\text{V}^{-1}\text{s}^{-1}$
So the answer is (a).

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