Drift speed - class-XII

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Question 1 of 57

A charged particle having drift velocity of $7.5\times 10^{-4}m$ $s^{-1}$ in electric field of $3\times 10^{-10}$V $m^{-1}$, mobility is?

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$6.5\times 10^6m^2V^{-1}s^{-1}$

$2.5\times 10^6m^2V^{-1}s^{-1}$

$2.5\times 10^4m^2V^{-1}s^{-1}$

$6.5\times 10^4m^2V^{-1}s^{-1}$

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