If current in a current carrying wire is 1.5A, number of free electrons per unit volume is 8 x1028m3 and area of cross section is 5 mm2 . Drift velocity of electrons will be

a) 0.02 mm/s

b) 2 mm/s

c) 0.2 mm/s

d) None of these

Answer: (a)

i = e n A Vd (relation between i and Vd)

[latex]V_{d}=\frac{1}{enA}= \frac{1.5}{1.6 \times 10^{-19}\times 5 \times10^{-6} \times 8 \times 10^{28}}=0.02[/latex]

Was this answer helpful?


0 (0)


Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *