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Physics Question on Electrostatic potential

A charged particle is moving in an electric field of 3×10−10 V m−13 \times 10^{-10} \, \text{V} \, \text{m}^{-1} with mobility 2.5×10−6 m2/V/s2.5 \times 10^{-6} \, \text{m}^2/\text{V}/\text{s} . Its drift velocity is

A

2.5×104 m/s2.5 \times 10^4 \, \text{m/s}

B

7.5 x 10-4 m/s

C

1.2 x 10-4 m/s

D

8.33 x 10-4 m/s

Answer

7.5 x 10-4 m/s

Explanation

Solution

The correct answer is (B) : 7.5 x 10-4 m/s.