Question

What is the drift speed of the electrons when there is a voltage drop of 118.8 V across the wire? Assume there is one conduction electron per atom.

Answer 1

Answer:

Explanation:

If e be the charge on the electron and v be its drift speed after undergoing voltage drop of 118.8 V

eV = 1/2 m v²

1.6 x 10⁻¹⁹ x 118.8 = 1/2 x 9.1 x 10⁻³¹ v²

v² = 41.775 x 10¹²

v = 6.46 x 10⁶ m /s

drift speed of electron = 6.46 x 10⁶ m /s