A current of 2 A flows in a wire with n = 8.5 10^28 m^-3 and area 1 10^-6 m^2. The drift velocity of the electrons is:

  1. 1.47 10^-4 m/s
  2. 1.47 10^-5 m/s
  3. 0.00147 m/s
  4. 2.94 10^-4 m/s
Answer

A) 1.47 10^-4 m/s

v = InAq = 1.47 10^-4 m/s — very slow. SLO P-09-E-10 · Application

Physics MCQ · More Current Electricity MCQs · Practise