Question

The mobility of electrons in a semiconductor chip of length 10 cm is observed to be 1000 cm²/Vs. When a potential difference of vis applied across it. What is the drift speed of electrons.

Options

• 1 cm/s

• 5 cm/s

• 2000 cm/s

• 1000 cm/s

Answer 1

2000 cm/s

Explanation:

v_d = μE

= `(mu"v")/"l"`

= (1000 × 10^-4) × `2/10^-4`

= 2000 m/s