Question

In a p-n junction having depletion layer of thickness $10$${}^{-6}m$, the potential across it is $0.1V$. The electric field is

• A. $10$${}^7$$V/m$
• B. $10$${}^{-6}$$V/m$
• C. $10$${}^5$$V/m$
• D. $10$${}^{-5}$$V/m$

Answer 1

The correct option is C $10$${}^5$$V/m$

$E=\frac{V}{d}=\frac{0.1}{{10}^{-6}}={10}^{5}V/m$