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 :

Question

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 :

2.5 $ \times $10⁶

2.5 $ \times $10^-6

2.25 $ \times $10^-15

2.25 $ \times $10¹⁵

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